86 CJ7 ENGINE WIRING HELP for first timer with years of research and zero results.... - Jeep Wrangler Forum
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Old 03-06-2014, 08:35 PM   #1
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86 CJ7 ENGINE WIRING HELP for first timer with years of research and zero results....

Hi everyone....... I'm trying so hard not to give up on my Jeep. Everyone is telling me to just get rid of it and get a new one, but I'm so hungry to understand how it works (and why it won't work.)

I learned to drive stick in a past boyfriend's Jeep a few years ago and bit off a lot more than I could chew by going out and getting my own Jeep, which turned out to be more of a project than anyone I know would be willing to take on......... and now I'm doing it alone. I've spent countless late, rainy, freezing, hot and itchy you name it.... nights ... since fall of 2012 .... scanning through thread after thread, and spending time hunched over the engine or underneath even though I had no idea what I was doing, I just love the feeling of being out there with the Jeep and doing whatever tiny thing I can accomplish. I basically took all the interior out and put it back in myself which was a blast, and now the complicated stuff........ hooking the new engine and dash wiring back up. 2 years and I haven't even gotten to enjoy the thing because it's just one problem after the next.......... daunting needless to say.

I feel like I've just been slamming my head against a wall this whole time.
There's only so much I can research and so many diagrams I can look at without them being hieroglyphics... I feel like I'm trying so hard and not getting any results... I'm out there in all kinds of weather scratching my head and bloodying up my hands without a care just hoping to get this thing running again. It's been a big step for me recognizing what most of the parts are, and being able to label them on this diagram..... but there are still some parts I don't know the names of: one from the starter solenoid that goes to some triangular type thing under the distributor off to the left.... and another coming from the same point of the solenoid to this big.. cylinder closest to the ground. I don't know whether to follow colors or numbers.........or points where the wires go to the circuit board at the firewallll..... or what. I guess I need to understand what importance the circuit board has, and whether to start from there or to start from the components when routing the wires. I thought i did a pretty good job, but things aren't adding up and my ex used wires with random names to go to random things that is bothering me....

i just want it to be normal again so i can actually follow a diagram without running into things that don't match on top of things that don't match. P(A&#%)(*W&@w34057kdf

So I learned to solder, and made all the connections clean so it wouldn't stall anymore....put all the wires back where they were originally when it used to start..... and then nothing. The only thing I changed was remove the pignose plugs from the ignition control module, but I wired them directly to the wires on the other sides so i can't imagine that could be the problem.
I tried matching wires up to an original cj7 diagram so a few are in different spots now, but I shortly realized there were soooo many wires and i couldn't figure out what the circuits they led to meant their jobs were supposed to be since none of them are named correctly.

I have a new EZ wiring 18 circuit harness... not specific to the 86 i don't believe...

I've been studying like 5 different diagrams and trying to find similarities in all of them so I could tell myself if there are any wires to be absolutely true.....

which has all been frustrating...... so i attempted my own diagram to show you all what my engine looks like so i might understand why it wont start and so you guys could more easily compare to others out there that I can't understand.

ill show you the diagrams and my notes as well so you hopefully can get a feel for my confusion and give me some guidance........

before i do this......

thanks so much and sorry for the unorganized post, i'm so exhausted and this is my last hope. hopefully someone can make sense of the wires i have hooked up now. spring is approaching once more, and... i just wanna ride.
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Old 03-07-2014, 04:16 AM   #2
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Free bump for ya. Good luck with your project!

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Old 03-07-2014, 05:54 AM   #3
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thanks I think I understand... Haha just keep it posting right?
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Old 03-07-2014, 04:47 PM   #4
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Yep. Very active site here so posts go zipping down through the list of New Posts at lightning speed. Not so much a problem for those looking at individual forums but, for anyone like me who primarily uses New Posts to check what's been posted, many posts won't get seen for a bit.
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Old 03-14-2014, 08:39 PM   #5
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SHE LLLLLLIIIIIVESSS!!!!!! TURNS OUT I HAD FOLLOWED THE DIAGRAMS CORRECTLY AND THE ONLY PROBLEM WAS THE IGNITION MODULE!!!!!! (which I had already ordered before thinking that may be the case)..... I was lucky to find someone around my area to test my voltage to the ignition coil. It was getting 11.5 volts which is too much voltage while the key wasnt being turned over.... So the bad grounding in the module nearly burnt out the coil.

glad that's overwith.
now to clean up the inside dashso my feet dont get tangled while I drive!
and hook up the wiper motor and defrost. Woooooooooooooooo
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Old 03-15-2014, 05:57 AM   #6
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That's great news! Congrats on getting your baby up and running! Now, you can enjoy actually driving it.
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Old 03-15-2014, 10:27 PM   #7
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.....and now she dies.
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Old 03-15-2014, 10:30 PM   #8
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I left the key half on for awhile after testing lights and stuff... And.... Went to start the jeep up a little while after.... And it fired up and then started making this horrifying woodpecker sound and the ignition coil was STEEEEAAAMMMING hot. I turned the key off and it didn't shut off. And I didn't know what else to do so I disconnected the battery terminal and it shut off. The plug off of the coil was wet but I couldn't distinguish the smell. And the ignition module was just a tiny bit warm.

any ideas?
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Old 03-15-2014, 11:23 PM   #9
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The solenoid on the fender could have gone bad and the coil could be shot too now. It's hard to tell with out actually seeing it but that is what I think. Did it sound like it was trying to engage the starter while the jeep was running that could have been the wood pecker sound.
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Old 03-16-2014, 10:25 AM   #10
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The solenoid on the fender could have gone bad and the coil could be shot too now. It's hard to tell with out actually seeing it but that is what I think. Did it sound like it was trying to engage the starter while the jeep was running that could have been the wood pecker sound.
sheesh. I'm not sure what that sound would be, exactly. And it didn't even fully get to running position. I gave a little gas as usual to start, once it fired I let off the key and kept my foot on the clutch and went to put in neutral and tap on the gas a little more and it seemed like all in the same instant the sound started. It wasn't sitting running and then started.
would the starter solenoid be hot when it goes bad?
the only things that were hot were the battery cables and the coil. Someone suggested that the transistor in the coil was just too energized from keeping the key on and so it burnt out but that makes no sense to me. All that should do is cause the battery to die. So.... Could there be an incorrect wire to the coil or too many wires to the solenoid?
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Old 03-16-2014, 12:09 PM   #11
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sheesh. I'm not sure what that sound would be, exactly. And it didn't even fully get to running position. I gave a little gas as usual to start, once it fired I let off the key and kept my foot on the clutch and went to put in neutral and tap on the gas a little more and it seemed like all in the same instant the sound started. It wasn't sitting running and then started. would the starter solenoid be hot when it goes bad? the only things that were hot were the battery cables and the coil. Someone suggested that the transistor in the coil was just too energized from keeping the key on and so it burnt out but that makes no sense to me. All that should do is cause the battery to die. So.... Could there be an incorrect wire to the coil or too many wires to the solenoid?
You could have a crossed wire but I would get rid of any extra wire that doesn't need to be hooked up right now and go through the process of elimination. All that extra stuff under the hood clean it all up and try again. Did you try starting it today at all?
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Old 03-17-2014, 08:20 PM   #12
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Ibtried starting today and now it just does the clicking and there's no cranking. Clicking is coming from the starter....
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Old 03-18-2014, 10:38 PM   #13
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Those are the only wires on my solenoid

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Old 03-20-2014, 07:53 PM   #14
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Old 03-23-2014, 09:05 AM   #15
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Those are the only wires on my solenoid

Attachment 887242
you have two on one post, one on another can't tell which is positive or negative.
and is that fatter yellow wire ignition power? And is it on the same terminal as your battery cable I can't tell...
then on the other side its the starter cable?
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Old 03-23-2014, 09:11 AM   #16
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I'm charging the battery tO see if that makes a difference.... What do you think about that?
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Old 03-23-2014, 04:53 PM   #17
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Yeah your battery could have been dead. The yellow wire on my pick is the ignition wire the others I believe deliver power to my coil I need to take my loom apart it's wrapped with black tape I want to put it in a loom. The big black wire is power from the battery the on the other post is power to the starter. But I'm getting ready to pull the engine and rebuild it I'll put more pics up with my wire loom and everything traced.
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Old 06-01-2014, 10:54 AM   #18
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I'm just going to reconnect everything based off a diagram instead of what it used to be when it ran.. Because that never matched a diagram either.
the wiring could be blowing components out one by one like you said, so I guess I could take those suspect parts off and have them tested

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