C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1986 Corvette

Old Nov 27, 2012 | 09:49 PM
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Default 1986 Corvette

I have just acquired a 1986 Corvette with a carbureted (chevy 350) I believe. It seems to be a wiring nightmare and I really need advice, schematics, and or wiring diagrams. The cooling fan seems to come on with the key turned to ON position. It has a fusible link. The ignition switch does not start the car. The switch must be in ON position,(fuel pump can be heard, seems to be hooked to fuel pressure regulator under hood) then flip toggle switch(PNK wire with fusible link I think), then I have to press a button to start the car. Is there a simpler way to wire this up so the switch can crank the car. I really appreciate any advice, and or help. God bless.
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Old Nov 27, 2012 | 10:16 PM
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Welcome and congrats on your 86! Sounds like you have some real work ahead of you! Hows the condition of the rest of the car besides the ignition nightmare?
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Old Nov 27, 2012 | 10:30 PM
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The car is awesome. Never been wrecked. Nice body. Nice Paint. Interior nice. I just want to finish it right with the engine.
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Old Nov 27, 2012 | 10:39 PM
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those $20 helsm repair manuals have the wiring diagrams in them...E-bay has the FSM from several sources for around 85 bucks...(I need one too for my 86). What part of the country you in? keep your eye on craig list for vettes being parted out..Be aware that in 86 , there is the E and L versions...Early/ Late...usually, but not always, the late has aluminum heads, early has the iron ones..they also have expensive targa tops if replacing, keep an eye on yours...and it a 150 core charge on them. Welcome to the forum..lots and lots of great info can be had here from guys that know their stuff. Dont forget the wave.
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Old Nov 27, 2012 | 10:39 PM
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Get a Factory Service Manual

http://www.helminc.com/helm/product2...486&itemtype=B
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Old Nov 28, 2012 | 01:45 AM
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The helms makes a great fire starter!

The Factory Service Manual provides good troubleshooting charts and other diagrams. Too bad its been hacked to a carb. There's no telling what the guy did to the wiring.

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Old Nov 28, 2012 | 07:19 AM
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We would like to see some pics when you get a chance!
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Old Nov 28, 2012 | 08:29 AM
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The helms makes a great fire starter!
lol, he does have a good point..but if you dont have a FSM, its a good starting place since it is better than nothing. Perhaps you can go to the libary to get a copy of the wiring.., I am sure someone here will post it for you...i cant post pics or I would. best of luck
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Old Nov 28, 2012 | 09:06 AM
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The wiring diagrams from a Helms will do you no good. Your only option IMHO is to attempt to match what you have with what it is supposed to be. That, I suspect will require an FSM. Will not be easy either.
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Old Nov 28, 2012 | 09:15 AM
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Originally Posted by JrRifleCoach


The helms makes a great fire starter!

The Factory Service Manual provides good troubleshooting charts and other diagrams. Too bad its been hacked to a carb. There's no telling what the guy did to the wiring.

Originally Posted by ghoastrider1
The helms makes a great fire starter!
lol, he does have a good point..but if you dont have a FSM, its a good starting place since it is better than nothing. Perhaps you can go to the libary to get a copy of the wiring.., I am sure someone here will post it for you...i cant post pics or I would. best of luck
Originally Posted by Muffin
The wiring diagrams from a Helms will do you no good. Your only option IMHO is to attempt to match what you have with what it is supposed to be. That, I suspect will require an FSM. Will not be easy either.
I believe you meant "HAYNES" for the "FIRE STARTER" !!

HELM is the publisher for the GM FSM !!!!!

OP - There's nothing really "not to like" with a push-button start if it's wired correctly. I'd spend some time trying to understand what the PO maybe intended. Are all of the connections properly terminated? Now if it's a "rat's nest" of maybe single colored wire, scotch-locks or twist connectors then it likely needs "rethought!!! Spend some time and sort it out in your mind first.

Last edited by WVZR-1; Nov 28, 2012 at 09:39 AM.
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