Ok, I'm disassembling my 81 so I can start restoring it. The factory wiring is pretty spliced up, so instead of trying to salvage it and probably screwing something up or starting a fire, I'm going to opt for a new 18 circuit wiring harness from Classic Inustries. Now, I don't want to keep all the 'new for 81' electronics crap for the engine, etc. Can I just remove all the stock wiring, put in that kit and call it a day? I'm planning on putting a mild 350 or 400 in it and setting it up like an 80 and below Bird, so do I really need all that computer crap for it? Here's the information on the kit I'm looking at ordering;

Specialty aftermarket complete wiring harnesses for 74-81 F-bodies are now available. Imagine replacing every harness on the car with a pre-assembled 18 circuit harness. The factory assembled wiring harness includes a completely terminated fuse block along with the following features .
Each harness includes automotive blade type fuses, flashers, horn relay, tachometer lead, ballast resistor for point type ignitions, fusible link, and a large selection of terminal ends, wire ties and grommets.

OEM specification-grade fuse block is pre-terminated to wiring harness at factory.

Fuse block is supplied with mounting plate or bulkhead connector (depending on application) for fast, permanent installation.

Anti-theft feature- Fuse blocks are designed so that you can simply remove the coil wire fuse from the fuse block to deter vehicle theft.

All wiring harness assemblies meet or exceed OEM specifications.

Harnesses are manufactured with GM color coded, industry certified, high temperature wire rated at 600 volts.

Wire gauges- 18 gauge to 10 gauge, depending on circuits

Easy to follow installation instructions are included with each harness assembly.

Factory tech assistance help line is available.

18 circuit harness includes all of features listed below . . .
Air Conditioning/Heat
Brake Lights
Coil (anti theft feature)
Electric fan
Emergency flashers
Gauges/dash instruments
Headlights
Horn
Radio (ignition hot)
Turn Signals
Wipers
Dome Light
Third brake light
Backup lights
Cruise control
Cigarette lighter
Power door locks
Power windows
Electric fuel pump

 

So I'm taking it that 81 is a bit too old for around here?

 

I had an '81 Z28 and I remember the wiring for the computer is separate from the main harness I believe... It controlled the carb mixture, distrib advance, and lock-up of the torque convertor... I replaced my carb with an Edelbrock and got an earlier model distributor and it ran fine... I'm not sure if there's a difference in the wiring between a Trans Am and Z28 though.

 

Well that's some good news! I haven't had much time to check it out, but once I get in there I'll see where it disconnects at. Thanks!