Hi folks!
I purchased an 86 Corvette in need of engine management harness. Due to mice chewing it up.
i got a nice used harness from another 86 Corvette. After cleaning, re wrapping the used harness, i started installing it. Im having a hard time figuring out where a few wires plug in, in the engine bay in the distributor location. Any help would be greatly appreciated. First photo shows the 4 plugs, plus pink (ignition wire) i dont see mates for these plugs. Also dont see where the pink wire connects to distributor?
thank you in advance for your help.
im sure i will have a few more electrical questions once inside the car. Theres been some tampering there as well.


4 unknown plugs locations

Two wires look like they are located to the distributor

 

Do you have the Factory Service manual for your particular year Corvette? They are available in print or on a DVD for a lot less.

Inside the electrical section there is a section where they identify the Connectors/plugs. From that you should be able to identify where they go. It is important to have the FSM for your Corvette, without it you are "shooting in the dark".

Be sure that you clean every connection so you don't have any resistance and possibly voltage drops. Those are some pretty knarly looking wires that you showed in the pictures. Cleanliness is important on a Electronically fuel injected Corvette. Clean every connection you come across until everything works normally again. I would make a list of the un-identified connectors and their wire colors, this will help you a lot when you have the manual and trying to identify the connectors. The colors of the wires is important, clean them before reading the colors so you get the colors right the first time. I am color blind but this helps me when I am trying to identify loose wires.

The easy way would be to have a identical car that you can verify the locations on. That might work in place of the shop manual but me personally I would get the FSM if you don't already have them. They are "priceless" if you own a C4.

From your Pictures it is clear that "Bubba has been there"....

Best regards,
Chris

 

1&4 go to the distributor......can't plug them in wrong, they have edges that only fit on one side
2 looks to be the bottom plug of the wiper motor. Speaking of which, you will want to move as much of that bundle down and out of the way as possible. The wiper motor takes up a lot of room behind the valve cover. Just replaced mine in my 86.
3 is EGR temperature connector
5 not sure what you are pointing at

 

Thanks for the “huge” help! Thats exactly what i needed to know. Im not sure if the plugs go to the wiper motor? I hve, what i thought was all of them labeled. But hopefully i missed one. It’ll be easier than still not knowing. Ha!
#5, is a pink wire. Its just up against the plug, which is why its hard to see. I know normally pink is ignition hot to coil/ distributor? But im not seeing this size wire in that general area.

 

I dont have a service manual. I normally buy one if keeping the car. I have one for my 67 Cougar. And had them for a few cars I’ve owned long term.
I bought the car for resale. This ones a 1 owner 32k mile car. Only issue was the wiring because of the mice.
i restore buy/ sell for a living. So it didnt make financial sense to purchase it.
i figured theres enough knowledgeable folks on here willing to help.
it would normally be a straight forward plug and play, but when connectors are missing, its hard to know unless you’ve been around these cars intimately.
I want to take care of the wiring issue, make sure everything works on the car as it should, give it a fresh coat of paint, then sell it.
The connectors are actually pretty clean. Its just the way the flash made them look.

 

Two plugs. And one cut wire with no plug. (Ignition to)?
Ok. So im down to these 3 wires. I have the front plug of the distributor still available. The square plug shown doesnt want to go there.any ideas?

 

 

Thats what i needed👍🏻 Thank you very much!