1 uF capacitor from JS10 to SG or the proto area ground. Wiring Harness Adapter Guide For E30 M60 And Obd 1 M62 Swap Pinout A Cheap Way Of Getting X20 C101 Connectors Rts Your Total Bmw Enthusiast. MegaSquirt MS3X Wiring Harness for full sequential fuel injection and ignition, as well as tons of other I/O (Dual Stage Nitrous, 2nd O2 Sensor, Boost/Launch Control, etc) This is the harness build guide for the Megasquirt MS3X. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . Showing: 4 results for Wiring Harness near Victoria, BC. Connect MAP hose to full vacuum source. Grounds need some Clarification. I also have a Mustang 91 with T5 transmission and would like to use traction control feature. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! Heavy duty metal DB37 hood for superior RFI/EMI shielding (no cheap plastic ‘metalized’ hoods used on our harnesses) This is the harness for the MS3X Expansion board. COP setup. At that time pin 2 on the MS3x connector was assigned as 12 VDC. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! Use with MS3X Expansion board or other sequential device Just. 1. 57 with MS3X $99. If someone with more experience could look over my setup I'd be ecstatic I know there is a wiring problem somewhere and expected so because I'm splicing into the factory harness I have 3 out of 8 injectors firing <-FIXED and no spark when running test. MegaSquirt MS3X Wiring Harness - 8 feet 8' of TXL High temp automotive grade wire. Wiring the engine harness to the MS harness has been pretty clear except for some uncertainties with the CKP input and what our setup is capable of. Today's Posts; Member List; Calendar; Forum; Saturn Related Forums; Saturn Performance; Tuning / Fuel Management; If this is your first visit, be sure to check out the FAQ by clicking the link above. AI-enhanced title. You will also need to connect 330 ohm, 1/4 watt resistors from TPS VREF (pin 26) to both the low resolution signal and the high resolution signal to provide a pull-up in the wiring harness. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. There are no reviews yet. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. That is the one part of the harness I did cut, and rewired the IAT wire to the GM sensor I installed in the y-pipe. Add to cart. 3) MS3 Cam Input (Dual VR v2. MegaSquirt MS3X Wiring Harness – 8 feet8′ of TXL High temp automotive grade wire. Parts I'm using: Stock L28ET OneSix Dizzy LS2 CoilsHi All, I just recieved my MS3x and wiring harness yesterday, and have been looking for diagrams to use to wire it in to my car. 57 in car for the first time and am running diagnostics. 99. MS3Pro Ultimate Standalone w/ LSX drop in Harness. MS3X on 2010 Camaro LS3 + Whipple @ 10psi + HPT + AEM 30-0333/0334 WB. Modding And Setting Up Megasquirt MS3X Remove Stock Wiring and ECU Modify Stock Wiring Mount The Megasquirt ECU Install CLT and IAT Sensors Wire The Megasquirt MS1/MS2 Harness Into The Car Wire The Megasquirt MS3/MS3-Pro Harness Into The Car Wire The ECU Panel, Wideband and Fuel Pump Reassemble The Engine Bay. Standalone engine management system based on Megasquirt MS3x Processor and firmware with enhanced inputs and output ports in sealed enclosure and sealed automotive connector. 2 dedicated spark outputs. I think I already know the answer to my question, but I want to ask first before I re-do my wiring. Diyautotune harnesses. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy d. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! Use with MS3X Expansion board or other sequential device; Just like a short run of the MS3X harness, but with no DB37 connector. . Part Number: BEC1800715. Otherwise when current flows through the grounds, there is a potential developed and the "ground" on the cam sensor will be below the ground on the Megasquirt. DB37 Solder Cup Connector for MS3X $ 8. 5 Sensor Inputs; 2. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy duty metal DB37 hood for superior RFI/EMI shielding (no cheap plastic ‘metalized’I've personally found PWM valves a little easier to configure - you just need to set the frequency (Ford runs theirs at 300 Hz) and adjust the duty cycle until you hit your desired RPM. Add to wishlist. Preassemble and Prepare The Megasquirt MS3/MS3-Pro Harnesses. 2 digital outputs. I have wired in pull up resistors in the wiring for both so the MS3 gets a voltage it can process. This product is manufactured in Gainesville, Georgia, USA. 4g63 with weird spark output. I have just recevied a MS3 card and in anticipation of obtaining a MS3x, after reviewing the latest MS3x wiring schematic, pin 2 is now shown. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. 99. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. MS3 on a V3. the Foxbody 550-937F kit is $1230 and i think the difference is connectors, but my connectors are not all the same anyway. Over Boost Switch - Left of center on front of IC – (930-606-101-00-M100) Pin 4 – Green / Red. However, MS3X now has Tach output. This model is equipped for basic, batch fire, but can be expanded to add sequential injection and 8 channel ignition control with an MS3X card (sold separately). 5 out of 5. Wire gauge on the ms3 pro harness. 99. Long TXL High-temp Wire, Heavy-duty DB37 Metal Hood, RFI/EMI Shielding, for use with MS3X Expansion Board, Each Location: Sandefjord, Norway. the universal Terminator X 550-937 kit is like $1070. 5 PWM outputs. The MS3X has a copy of this circuit that is used for cam or second trigger input. Wiring Harness, MegaSquirt, 8 ft. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . 3. by JoeC » Sat Apr 13, 2019 5:57 pm. 0pcb. Is it using it's own pattern if the cam signal is not presant. In the end, the largest wires I used for the ECM side of things was 18awg for the injectors and coils, and that was. Just to note, the motor will be turbo-charged, and I will use my MS3x to control box spark and fuel. For a V3. I am able to read a signal on the wire to the harness. Hardware manual covering specific wiring and configuration of your Megaquirt MS2/V357 ECU. SAYS IF HALL SENSOR. 1 ecu that is the vanos motor. 3 Wiring Harness The Megasquirt can be supplied with a "pigtail" wiring harness to form the basis of your own wiring. I've read the MS3 manual wrt grounding and understand importance of running grounds back to MS. Use a relay board and one of Mario's harnesses and you'll have a nice clean factory install. I am installing a 1997 Ford Explorer 5. To make sure you can’t accidentally switch the upper and lower harnesses, the MS3X harness uses a male DB37 connector instead of a female one. Filter (0 active) Filter by. I even pulled the Ms out and made sure the jumper was installed for the cam input. 4 coming shortly after this one. This model is equipped for basic, batch fire, but can be expanded to add sequential injection and 8 channel ignition control with an MS3X card (sold separately). Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy d. 2:. 2a. I have some questions as I am hooking up the wiring. MegaSquirt MS3X Wiring Pigtail – Length = 24″. This MS330-K kit includes everything you will need to build your MegaSquirt-3. 4 Scope of advice with MS3X; 2: Megasquirt System Hardware. Add to cart. 3) MS3 Cam Input (Dual VR v2. Just like a short run of the MS3X harness, but with no DB37 connector. I am using a preassembled ms3x system with a 3. harness side) when showing db37 pinout at all times. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . 00. I have a m50 NON-Vanos motor with a Motronic 3. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . ( 1 question) 5 out of 5 based on 4 customer ratings. 00 MSHarness: 10' main board wiring harness $79. Powered up my MS3x 3. 0 is an ECU based on Megasquirt-3 technology, consisting internally of an MS3 card and an MS3X expansion card installed on a through-hole DIY V3. 57 $ 659. Hello,. This is the latest top of the range MegaSquirt ECU – the MegaSquirt 3 (MS3)! This controller is jam-packed with features found on aftermarket engine controllers costing 10X as much, yet is easy to use and configure!. 0 – Unassembled Kit Part # MS330-K. 99 Add to cart MegaSquirt 3 ECU with MS3X Expansion 5 out of 5 $. . 70 Subtotal without wideband . Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! Use with MS3X Expansion board or other sequential device. I like using the relay boards because they simplify the wiring process and they make it a lot easier to have a clean install. MegaSquirt MS3X Wiring Harness – 8 feet 8′ of TXL High temp automotive grade wire. I purchased the pre-assembled MS3 with MS3X board and the 24" harness for both and pretty much have it all figured out except for these options. Wiring Harness Adapter Guide For E30 M60 And Obd 1 M62 Swap Pinout A Cheap Way Of Getting X20 C101 Connectors Rts Your Total Bmw Enthusiast. 3) MS3 Cam Input (Dual VR v2. You don't need that ignition module, you ve COP on your car and you need to find a way to ignite your coils with MS3X spark outputs. 3) MS3 Cam Input (Dual VR v2. Why bother with a 2. Would 18 gauge be alright to run from the MS. 57 with wiring harness for 00-04 3rz-fe turbo plug and play « on: Oct 26, 2016, 03:56:33 PM » I have for sale a Megasquirt Stand alone ECM MS3X v3. 99 DIYAutoTune MegaSquirt MS3X Wiring Harnesses Wiring Harness, MegaSquirt MS3X , 8 ft. Traction Control. Распиновка разъемов C101 на X20 Bmw 3 Series 2 5 л 1987 года Drive2. Subscribe. I'm setting up my wiring for my Dodge Van with 5. once the computer is hooked up to a 12v circuit it works just fine so thankfully I built it right. SAYS IF HALL SENSOR. They feature color-coded wiring with labeling printed on the wire every 6 in. Vehicle Info Required to Guarantee Fit. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy d. This version of the documentation applies to: •. MS3/x ground wiring. Joachim. MegaSquirt MS3X Wiring Bundle – Length = 8′. the Foxbody 550-937F kit is $1230 and i think the difference is connectors, but my connectors are not all the same anyway. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy d. The line does not need to be huge. 99. 3 high current digital/pwm outputs. Description. 1. MS3X + 4 bar mapsensor + harness. 60. I am able to read a signal on the wire to the harness. Help with traction control wiring and needs. Anyone onto the questions. 4 tacoma 2rz-fe 2wd with manual using stock harness with a MS3X. MegaSquirt MS3X Wiring Pigtail - Length = 24" 24" of TXL High temp automotive grade wire. 1 ecu from bosch (Code 402) and have only been able to find wiring diagrams for the similar 3. 2014 BMW X1 35i MSport - single turbo N55 - stock! 2012 BMW X3 35i MSport - single turbo N55 - stock! (GONE)8′ MegaSquirt Wiring Harness (MS1/MS2/MS3 Ready) 5 out of 5 $ 99. The crank position input, is has the red wire from point 25 meeting the black from point 8 and then connecting to a blue and yellow wire at the pigtail. Everything checks good in the engine harness. I've also tried the nitrous in. COPs are from Toyota Highlander with 350 ohm input resistance. 99. The versatile MicroSquirt with 30″ Harness: Standalone Engine Management System, Transmission Controller or CAN I/O Expansion Module- Version 3. 1 Overview; 2. Add to cart. 00. 99 8' MegaSquirt Wiring Harness for MS3X Add for $ 114. I have a couple questions I have some resistors to be able to run TFI as well as the ms3x card so I can easily run my PWM IAC and my A/C. For an MS3 V3. Since my MS3X is already installed and running my 1997 Vortec 350ci Truck, all I have to do is splice into the factory wiring for the signal hopefully this will. 99. Add to cart. Setup your vehicle wiring harness ensuring it is fused. 05-19-2017, 03:45 PM. IAC and Ignition wire have been added for MS-I / MS-2 use or MS-3 Primary Harness Use 8′ of TXL High temp automotive grade wire. Would 18 gauge be alright to run from the MS. Which outputs (A,B,C and D) go to. On the MS3X expansion board, R11 adjusts the threshold voltage, and R32 adjusts the hysteresis level. Color coded wiring. The versatile MicroSquirt with 8′ Harness: Standalone Engine Management System, Transmission Controller or CAN I/O Expansion Module- Version 3. Built a Megasquirt Computer to handle spark and ignition. Collect the sensor grounds at the engine together onto one line and run that to Pin 7. The MS3 and MS3X do not put out enough juice to fire the factory coils, unlike the Chevrolet Coils which have built in ignitors,. 2. MS3 w/code 1. I installed a MS3 cable harness when I installed MSII last year. 2. 5 out of 5 $ 114. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . it is already tuned for boost and you can literally just plug in the harness, fire it up. I get to installing the MS3X. 24″ MegaSquirt Pigtail MS3X Harness $ 79. Color coded wiring with labeling printed on the wire every 6 inches — no paper. MegaSquirt MS3X Wiring Bundle - Length = 23" ~23" of TXL High temp automotive grade wire. This manual covers MS3X/V3. 8′ MegaSquirt Wiring Harness for MS3X. Megasquirt 3 with 3X Expander and V3 CPU. Add to cart. there are some other controllers that. The R pin is the HEI module’s tach output. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. Color coded wiring. Regular price $114. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here!All wiring is pre-crimped (NOT solder cupped!) to the DB37Heavy duty metal DB37 hood for superior RFI/EMI shielding (no cheap plastic ‘metalized’ hoods used on our. 00. 8′ MegaSquirt Wiring Harness for MS3X. 99. MegaSquirt MS3X Wiring Pigtail - Length = 24" 24" of TXL High temp automotive grade wire. IMO it's strange why the stock MS3X wiring from DIY Autotune does NOT have shielded CAM-wiring as standard. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! Use with MS3X Expansion board or other sequential device. General Tech Forums. 0, wire TachSelect to VRIN and TSEL to VROUTINV. 3) MS3 Cam Input (Dual VR v2. 1 Best Practices. At that. MegaSquirt 3 ECU with MS3X Expansion. Note that the DIY Autotune wiring harness has a shielded wire – connect only the inner wire to this pin! Connect the E pin to MS3X pin 14 to send the timing signal to the HEI module. This uses the PWM idle driver on the MS3X board. I am opting to run sequential injection rather than bank-fire and will use an MSD box to fire the coil. ) Does not apply to other Megasquirt products or other firmware versions. We’ve packaged a DB37 male solder cup connector and a metalized plastic backshell for your MS3X builds. Wire to pin 63 for 1G, 83 for 2G pin 22. It sounds like your saying I cant do that but just move the GREEN and RED wiring from my LED's to the ms3x expansion board itself. Share. x See the Setting Up manual for more detail on version numbers. . 2. My questions: 1. With this guide, no previous electronics or soldering experience is required. 00 38NPT-Bung_A: Aluminum bung for IAT sensor (Also available in stainless steel) $6. SAYS IF HALL SENSOR. Hi, Just putting my wiring harness together to power 4 LS2 coils sequentially on a Miata. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. 1 uF capacitor from JS10 to SG or the proto area ground. 8′ of TXL High temp automotive grade wire. More expensive standalone systems also. Top. Re: Wire gauge on the ms3. 2. Includes complete Universal 8′ Flying Lead Harness. MS3X Quadspark wiring. Notably, the car features a BMW E46 M3 6-speed transmission, a Thayer Motorsport upgraded Limited Slip differential, and a meticulously assembled engine. The crank sensor shield is also listed as Pin #2, but that just seems to be another ground wire on my harness that was routed out towards the sensors. A New Chapter Begins: Meet the New Owners of DIYAutoTune/AMPEFI October 10, 2023. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. 25 IATwPiggy: Intake Air Temperature Sensor $9. Use these settings in TunerStudio. To make sure you can't accidentally switch the upper and lower harnesses, the MS3X harness uses a male DB37 connector instead of a female one. The MS3Pro LSX Series plug and play harness is professionally engineered and easy to install. ( 6 customer reviews) $ 1,599. SAYS IF HALL SENSOR. AMP’d MicroSquirt ECU hardware features. 8′ MegaSquirt Wiring Harness for MS3X. Check Details Megasquirt ms3x wiring diagram. 57: Install a 1K resistor in the R57 slot. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . 3 Wiring Harness; 2. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. 57 board with MS3X board. 8′ of TXL High temp automotive grade wire. 5″ x 3. I'm trying to avoid having a couple of fine wires needing to jump across from the MS3x harness to the MS3 harness. The 3 wire IAC driver is the only circuit there and it is not tied to any of the pins on the 55 pin connector. 4 Crank / Cam Inputs The Crank and Cam sensors provide the. by jsmcortina » Thu Aug 14, 2014 5:02 pm. The recall puts it towards the bell housing. Connect it to pin 24 on the Megasquirt main board, or the Tach pin on the relay board. If that's the case how can I change the inputs; From what I understood I would just unhook the 2 ignition wires from the db37 harness and run it into my ms3x expansion harness under SPARK A and SPARK B. Colors shown are for factory wiring harnesses. 4. Included is a MegaSquirt-III Engine Management System w/PCB3. Pin 9 - Green / White. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . by lastermann » Tue Dec 27, 2011 6:27 pm. 00. Would 18 gauge be alright to run from the MS. Find Parts and Accessories ms3x KEYWORD and get Free Shipping on Orders Over $109 at Summit Racing! Get Off-Road With Savings on Select Jeep® Products! Vehicle/Engine Search Vehicle/Engine Search Make/Model SearchI've personally found PWM valves a little easier to configure - you just need to set the frequency (Ford runs theirs at 300 Hz) and adjust the duty cycle until you hit your desired RPM. Connect it to pin 24 on the Megasquirt, or the Tach pin on the relay board. SAYS IF HALL SENSOR. Description. 4g63 with stock 1990 sensor. 49 $ 6. Megasquirt-3 with MS3X. 3) MS3 Cam Input (Dual VR v2. You will also need to connect 330 ohm, 1/4 watt resistors from TPS VREF (pin 26) to both the low resolution signal and the high resolution signal to provide a pull-up in the wiring harness. I currently have the recommended tach driver mods installed per MS2/Extra ignition description (which work). Megasquirt diagram wiring ms3x ms3 computer honda efi engine wire fuel source iq installation injection [diagram] megasquirt relay board diagram20 beautiful megasquirt wiring diagram Megasquirt relay board harness did own adRelay board mod: 2-wire pwm air valve + electric fan relay. Description MegaSquirt MS3X Wiring Bundle – Length = 8′ 8′ of TXL High temp automotive grade wire. 2. You will also notice that the "sensor ground" wire on the DIYautotune harnesses grounds to the same point as the other grounds for MS3. MegaSquirt MS3X Wiring Bundle - Length = 8' 8' of TXL High temp automotive grade wire. On to all the injectors. MegaSquirt MS3X Wiring Harness - 8 feet 8' of TXL High temp automotive grade wire. 5″ tall including the mating connectors. Joined: Mon Sep 19, 2011 6:10 pm. The are essentually the Fuel VE table and the results as measured by the wideband sensor. 4. I've read the MS3 manual wrt grounding and understand importance of running grounds back to MS. This manual contains a QuickStart Guide, installation, tuning and feature background information. At least that's what the wiring diagram that came with it says. Both composite and tooth loggers completely lack input from the crank sensor. it's POSSIBLE the PO set it up in wasted spark (basically 1 wire will trigger cyl 1 and 4, the other 3 and 2) but that isn't likely if he's bought the harness from DIYPNP and I believe it has provisions for full sequential spark. 12 channels sequential fuel (hi-z injectors or low-z with. 12 analog inputs plus built-in MAP, Baro, and internal ECU temp sensor. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! External Ignition Wiring. Would 18 gauge be alright to run from the MS. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . 7 Tuning interface; 3: Wiring. 3. 5″ long (including the mounting ears), 4-5/8″ wide, and 2. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . 12-30-2011, 05:07 PM #10. ( 1 question) 5 out of 5 based on 4 customer ratings. 2 Megasquirt Installation; 2. To start viewing messages, select the forum that you want. Be sure to follow the guidance here to avoid common mistakes that will often lead to problems. 5 mm barrel connector used with the Innovate LC-1 and VVTuner. The first line in the product description, is this: MegaSquirt MS3X Wiring Bundle – Length = 23″ The second line in the product description, and the first line in the feature list, is this: ~23″ of TXL High temp automotive grade wire. 00. 8′ MegaSquirt Wiring Harness for MS3X. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! Use with MS3X Expansion board or other sequential device. Both on the. I have a couple questions I have some resistors to be able to run TFI as well as the ms3x card so I can easily run my PWM IAC and my A/C. We've packaged a DB37 male solder cup connector and a metalized plastic backshell for your MS3X builds. Beyond the Ordinary: BMW Style with a 2J Twist November 14, 2023 Read More . There are aftermarket versions of this controller out there with harnesses for under $30. MegaSquirt MS3X Wiring Harness – 8 feet 8′ of TXL High temp automotive grade wire. Where is this harness manufactured? It is assembled in the USA. At least that's what the wiring diagram that came with it says. With this guide, no previous electronics or soldering experience is required. SAYS IF HALL SENSOR. comNeotech mega accordion harness Harness mega wiring ram 2006 cab dodge rear door mopar 2500 oem 2009Harness megasquirt 12ft. 1988 Porsche 911 Carrera. Serving my area. 18aw for the single wire supply is plenty big enough. 12′ MegaSquirt Wiring Harness (MS1 / MS2 Ready) and possibly the MS3X Harness as well if you’re running the MS3X board. MS3X is designed to run logic "smart" coils specifically like the LSx types which are usually 4 or more wires. Long TXL High-temp Wire, Heavy-duty DB37 Metal Hood, RFI/EMI Shielding, for use with MS3X Expansion Board, Each See More Specifications. The spark wires might be custom or stock. 3) MS3 Cam Input (Dual VR v2. Jacob Hernandez. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . $23. ect , and have all my wiring as per schematics on MS site. MS3Pro Ultimate Standalone Engine Management System w/ Harness. We've got a pre-assembled MS3 with the MS3X extra board, and I believe it is a V3. Add to wishlist. The setup is a LQ9 408 so i have the harness occupied as follows so far: Main Board: IAT CLT TPS Crank EGO1 (Innovate Bank 1) INJ. 57 mainboard. Internal pull up: For a V3. MS3X/V3. Re: car wont start with new ms3x. ModMotorMayhem. Any help would be appreciated. Check Details Part 24: megasquirt ms3-pro. 24″ of TXL High temp automotive grade wire. 3. Would 18 gauge be alright to run from the MS. The extra wire in the shielded cable that should be in Pn #2 on the hardware guide just seems to have been spliced into one of the chassis grounds. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. Add to wishlist. SAYS IF HALL SENSOR. 0 too, but the point gurov makes is fair - using identical drivers for both sides is good practice. External pull up: Connect a 1K resistor between the wire on pins 24 and 26 on the main board harness. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . To pin 30, connect the 12 gauge red wire you ran all the way to the fuel pump. MS3Pro ULTIMATE Pinout Glossy Card. Boscobel, WI 53805. I need some advice from the group. C4 Tech/Performance - MS3X wiring to 91 HEI7 and ECM harness - Can someone confirm the C3, C9 and D13 ECU pin out function names and wiring colors pls? Bentley and Chevy Thunder are not consistent when describing these three. 18" pigtail harness for VVTuner variable valve timing controller. Connect your Megasquirt to a 12V fused supply either in the vehicle or on the bench. There is a recall on us crankps and they sell a wiring harness kit with it.