1986 Pontiac Firebird ENGINE WIRING HARNESS HARD-WIRE

Tiny
MICAHMAYSR
  • MEMBER
  • 1986 PONTIAC FIREBIRD
  • 5.7L
  • V8
  • RWD
  • AUTOMATIC
I have a 1986 Pontiac Firebird that came with a v6 motor, however the Chevy 350 5.7L(CARB) is the motor that I'm putting into my car now. I was wondering why wont the wiring harness work for the motor that I'm putting in it? Is it ANY other way that I can hard-wire my starter, distributor, ignition, and alternator without having to buy the wiring harness?
Wednesday, August 13th, 2014 AT 10:11 PM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You have an operating system for one engine and you are trying to put a completely different one in. That isn't going to work, not to mention that it is against Federal law to attempt this swap on an emissions certified vehicle
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Thursday, August 14th, 2014 AT 2:48 AM
Tiny
MICAHMAYSR
  • MEMBER
  • 3 POSTS
I'm from Illinois. Illinois law states that any car over 20yrs old doesn't have to subdue to emissions testing. I've seen a video on youtube that had the same exact motor and transmission in it, but the guy didn't show what he did to run his own wires. But I was told that the only comenents that need to be ran is starter, gauges, alternator, ignition, and distributor. But I don't know what wires run to what components.
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Monday, August 18th, 2014 AT 7:11 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Here is an engine wiring diagrams to help you. Check out the images (Below). Please let us know what happens.
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Monday, August 18th, 2014 AT 8:00 AM

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