New harness installation, can I get a complete detailed map of cabin and under hood diagram?

BOSSBOSS

MEMBER
1986 OLDSMOBILE CUTLASS
5.3L
V8
2WD
AUTOMATIC
75,000 MILES

I'm installing a 21-circuit harness into the car listed above. I have everything out and ready for the new harness. But I for the life of me cannot find a complete detailed map of cabin and under hood diagram that's complete with color code. I'm using a lm7 5.3 with a holly Terminator xmaxx stand alone, 4l80e trans. Under the hood will be okay. But I need to rewire the complete inside of the car. I don't mind paying you guys for this info if you can provide me with a detailed map of the inside diagram for wiring. Please help, I'm in dire need of y'all expertise. I've spoken with you once before on YouTube about wiring in cab for a 1986 cutlas, please get back to me.

Wednesday, March 6th, 2024 AT 8:49 AM

4 Replies

KEN L

MASTER CERTIFIED MECHANIC
50,192 POSTS

So, which wiring diagrams do you need? HVAC? Engine? Sounds like it is going to be a fun car :) Here is the engine wiring harness please let me know what else you need. Check out the images (below). Let us know how it goes.

Images (Click to make bigger)

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Wednesday, March 6th, 2024 AT 11:40 AM

BOSSBOSS

MEMBER
2 POSTS

I need the diagram for a 1986 cutlass supreme in cab. So, I'm rewiring the car's harness itself. So, if possible I need a color coded diagram of all rear brake lights dome lights dash, A/C, doors, front and rear blinkers/hazards, wiper/fluid spray, windows, door locks, headlights, etc. I think I can handle my 5.3l ls lm7 swap, especially with the holly Terminator xmax stand alone. I just need the car harness diagram, and whatever needs to connect to the standalone harness.

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Wednesday, March 6th, 2024 AT 12:12 PM

KEN L