Help!!!! Trying to wire new electronic mopar ignition

Discussion in 'Electrical and Ignition' started by 71scamp78, Nov 2, 2018.

  1. 71scamp78

    71scamp78 Well-Known Member

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    Alright I know this a A body site but you guys are pretty knowledgeable. I got a 88 ram d100 and it has had a 383 put in it. Truck was a fuel injection truck and small block so I need to start fresh on wiring new mopar electronic ignition. I got the kit and can not get it to work for nothing. I still figure what wires to use to power ecu and coil using the ballast resistor. I know I need a switched 12v source and and 12v while cranking but I haven't had any luck..please help
     
  2. Dana67Dart

    Dana67Dart Most undignified way to get to Colorado!

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    You will need a wiring diagram.

    We will need a lot more info to assist, like was the wiring gutted, is the stock ballast resister in place. does the 383 have a dist that is setup for electronic, What mods have you made to the electronics, what tests have you performed and where, ETC....

    Is the original electronics and wiring still on the vehicle?

    did a little digging on rock auto and ICU for your truck is the same as 72 Dart, so wiring should be similar
     
    Last edited: Nov 2, 2018
  3. 71scamp78

    71scamp78 Well-Known Member

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    Well my truck had the lean burn so no icu..all the stock wiring inside dash is there as well as under hood. The under hood wiring has been cut back a lot so I dont know what wires to use for my cranking 12v source..I have new orange ecu , new mopar distributor, new ballast all came in kit
     
  4. 4spdragtop

    4spdragtop FABO Gold Member FABO Gold Member

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    Lean burn would still have ecu. Pics
     
  5. 71scamp78

    71scamp78 Well-Known Member

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    It has a starter relay and I see what looks like a computer by battery inside front fender
     
  6. 67Dart273

    67Dart273 Well-Known Member

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    I have no idea where to get a diagram for that but that IS what you need. First you said EFI, then you said "lean burn" which is it?

    Some of the later model Mopar/ Jeeps used a starter relay with an extra terminal. That would provide your cranking 12V back to the ignition on start
     
  7. 71scamp78

    71scamp78 Well-Known Member

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    It was efi and I have it all wired up correct per diagram with the electronic ignition that was easy and I have done it before. I just cant seem to find the 12v cranking source. I think that's all I need to do to get it to work. I'm stressed over it lol and scratching my head. From what I found online the blue wire coming out of bulkhead is what I need for the on and 12v source
     
  8. 71scamp78

    71scamp78 Well-Known Member

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    This is what my wiring looks like from what I've seen..all the colors are right

    Screenshot_20181102-211743_Google.jpg
     
  9. 71scamp78

    71scamp78 Well-Known Member

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    Well I'll try and get a better image or a link
     
  10. 71scamp78

    71scamp78 Well-Known Member

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    This looks just like mine if you can read it

    Screenshot_20181102-213035_Gallery.jpg
     
  11. 67Dart273

    67Dart273 Well-Known Member

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    You are going to have to provide something I can read LOL
     
  12. 67Dart273

    67Dart273 Well-Known Member

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    When you say "cranking source" do you mean to feed the ignition during cranking, or to fire the starter? How about safety switches disconnected, IE neutral safety or clutch safety?:
     
  13. 67Dart273

    67Dart273 Well-Known Member

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    This one shows "expected". Branch off same wire as VR feeds 12V to ballast resistor and on to coil. The starter relay is the newer style as I suspected. I thas a separate terminal to give you ignition power during cranking. That is the pink coming off and then down to the coil

    http://repairguide.autozone.com/zne...00c152/80/05/2c/6a/large/0900c15280052c6a.gif

    "I bet" this is the style starter relay you have. Notice the added terminal marked "ballast/ fuel pump". That is what feeds 12V to the ignition during cranking, the pink wire

    182185d1363835714t-1988-comanche-issue-starter-relay-diagram.jpg
     
  14. 67Dart273

    67Dart273 Well-Known Member

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    The starter cranking signal which fires the start relay is yellow "just like it always was" LOL. If that is not working check your neutral safety

    Have you got any of the old EFI/ TBI stuff still?
     
  15. 71scamp78

    71scamp78 Well-Known Member

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    Well I tried using the yellow wire as my cranking source and my truck wanted to try starting when I touched the wire to one side of the ballast..one side of ballast is suppose to have a 12v source when ignition is in the on position and the other side is suppose to be the 12v cranking source correct
     
  16. 67Dart273

    67Dart273 Well-Known Member

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    You are not listening

    THE YELLOW DOES NOT HOOK TO THE BALLAST. The yellow goes to fire the starter relay.

    The coil resistor bypass COMES FROM the extra contact on the starter relay. Please re-read what I posted carefully

    "Let's step back" to the older traditional girls like on here. In those cars, the starter relay did NOT HAVE the extra bypass contact. In the A bodies, the coil bypass came right from the ignition switch. There is a SEPARATE contact in the switch (IGN2) that is SEPARATE from the "start" contact. IGN2 is what provides starting ignition power. YOU CAN NOT USE the yellow for that directly

    I am guessing your truck does NOT have the separate switch contact otherwise they would not be using that newer starter relay. In fact it is shown in the diagrams I posted

    You should already have the odd starter relay I showed earlier.
     
  17. 71scamp78

    71scamp78 Well-Known Member

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    My starter relay is this style..could I just switch it out to the older style one

    20181101_161459.jpg

    20181101_161457.jpg

    20181101_161508.jpg