Hey guys i have a 91 camaro rs that had the 305 with a 5 speed in it, when i bought the car it had the 5 speed still but someone had pulled the 305 and cut the harness in half instead if pulling it thought the firewall. Im putting a carbed 383 in it and i was told that i only need the drivers side half of the harness, is that true? And could i use any harness from 82-92 or even from a firebird? or do i still have to use the 91-92 harness? thanks alot!

 

I just swapped a carbed 350 into my Camaro and took out the V6. I removed a lot of wires from the passenger side harness, but only 1 or 2 from the driver's side.

The driver's side harness has 2 connectors attached to each other on the engine bay side. The smaller of the two contains wiring for your airbag, front lights, wipers, ignition/starter, VSS, brake warning system, and one Pink/Black wire for 'emission controls.' The larger connector has wiring for the gauges, wipers, VSS, TCC, ignition, interior power(fuse box), airbag, coolant fans, fuel control, horns, and front lights.

You should be pretty safe using a harness from a Firebird or a Camaro and most of this harness needs to stay intact. The only difference is that a Firebird harness will have connectors for the headlight motors.

The harness coming from the passenger side fender contains wiring for everything else. Most of it is computer/sensor connections and I removed quite a few wires from that harness in my swap. I don't have a pinout of that connector handy since I'm at work atm.

You can find wiring diagrams here:

http://www.austinthirdgen.org/index.php?pid=19

 

It's possible to buy a stand alone dizzy for a carbed engine and not need the computer at all.
An HEI MSD Pro billet comes to mind.

 

Not even close

The C100 is indeed split into halves, but one half is lights and wiper. The other half is all interior power, IGN, gauges, starter etc and is attached to the engine harness

The light side you dont touch. Read about the engine side here:
https://www.thirdgen.org/forums/ltx-...p-3rd-gen.html

Camaro/bird engine harnesses dont change but the light harnesses are worlds apart. Also bear in mind V6/TPI batteries are on the drivers side while TBI cars mount it on the pass side

 

So you're saying my GM shop manual is wrong? Or did they change the connector pinouts between 91 & 92?

 

Im not sure what shop manual you have as they dont go over dissecting harnesses for carb swaps

Harnesses between 90-92 did not change anywhere worth mentioning

Read the thread, see the pinouts. Take a harness apart, see the pinouts. Not sure what your point is

 

Its the standard GM factory service manual for 1992 Camaros. It of course doesn't cover removing wires for a carb swap but anyone with a little knowledge of car wiring and the ability to read and learn can use it to dissect the harness for a carb swap.

It does have the pinouts for the C100 connector as well as a few other connectors in it.

I did read the thread, at least the part about taking the harness apart. I'm not sure how similar a carb swap and an ltx/lsx swap is though? Your connector pinouts are different than the diagram I used, but the one I have here on my computer is from a Firebird, not a Camaro. However, the only difference should be in the lighting wiring, the body/ignition/interior wiring pinouts should be the same.

 

The pinout listed was based off the vague shop manual pinout descriptions and the even more vague austinthirdgen pinout after tracing each wire individually thru each circuit

How is disassembling the harness any different for Carb or swap? Its not

The only part of the harness you reuse is the engine half of the C100 which includes all of the driver input wiring (starter IGN etc), gauges, interior grounds and relays. Compare it to a non CC carb harness. Youll notice the repeat of wiring as they only use user input and gauges

If you used a different pinout then you have a different year C100

 

Thanks for alot of info. I happened to stop by a junk yard today and snagged a 86 camaro wiring harness, will i be able to use this in my 91?. The light side of the original harness is intact so i really only need the other side and the side going to the computer. I grabbed the 86 computer also, will it be nessicary?

 

Maybe my copy of the C100 on my work computer is different. I know I used my manual when I removed the wires from the harness. I'll have to double check it when I get home. The copy I have here does list "headlight doors" so maybe its really a firebird harness. That's what I get for trusting files on the Internet I guess.

 

Time to put this discussion to bed

This is a photo of my 92 service manual, followed by the austin third gen 90 C100 pinout, followed by my 90-92 C100/C207 pinout chart. You will notice that they are exactly the same with some wire clarifications at the end





Unfortunately, no. This is your new pinout, compare it above and youll see the pins are completely wrong in some areas

 

I'm not gonna clutter this post up with pics of my shop manual as it looks identical to yours. There is no point in posting the same pics twice.

I did use the diagram from austinthirdgen in my earlier reply. Looking at it now, I see what I did. I didn't match up the pin locations to the half of the connector. I looked at the two halves of the connector and the two tables and assumed the tables matched up to the connector half pictured above them without checking the actual pin location notations.

Totally on my part as I do know better than that.