crazymonkey16

I have a '90 305 Camaro that I'm trying to finish fixing. It has no A/C but I don't know if it was deleted or factory. On the faceplate, I put together all the vacuum lines, but there appears to be a 5-pin electrical connection on the top. I have a 6-pin harness dangling behind the faceplate... my question is, is the 6-pin harness supposed to hook up to the A/C faceplate, or does it go to something else? If this is its function, which wires do I wire where on a new 5-pin harness? Thanks.

camaronewbie

These might help - wiring diags. Scroll down past the 1992 basics, and you'll see a ton of stuff for 1992. I know your car is a 1990, but it should be 99% the same for that stuff.

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

crazymonkey16

Yeah, I've checked wiring diagrams... I've got Chilton's as well as Haynes, and neither of them show a 6-pin for A/C... and maybe I'm not reading these diagrams right, but they only show two wires coming to/from the A/C faceplate... :P could be I'm just a n00b.

camaronewbie

Can you get us a pic of this connector? Might dig up the the dash area and under the center console and see if there's any other connectors. There would have to be more than 2 wires going to the controls. The light alone has 2 wires - there will be several wires for the blower motor settings (since there's 3 speeds to the blower motor).

crazymonkey16

Ah, I worded that poorly - the harness has 6 wires, the diagram looks like it only has 2 wires coming to the faceplate. And i will get pics up after work today.

crazymonkey16

Wow... I can't believe I still never put these pics up... :P I thought I had, and that nobody responded. Anyways, here's the wiring harness... any ideas? I've looked at several ac/heater controllers for my Camaro and older years, and they all have 5, not 6, terminals.

camarotucker

iTrader: (2)

A/C connector is a five pin. I want to say that the picture is of the radio harness.

crazymonkey16

Hm... you don't have a pic of that plugged in, do you? Because the radio in the picture is stock, and that plug wouldn't fit anywhere in it.

travis401

iTrader: (1)

ive got a 91, and have mt radio out atm, ill snap some pics of the hvac connector when i get home tonight.

crazymonkey16

Thanks, travis... I know my radio's hooked up right, and I know there's a 5-pin plug for my hvac, but I don't know what wires go there... I suppose i'm wondering if 5 of those 6 wires go to my hvac, like it's a plug for a diff style hvac control faceplate?

travis401

iTrader: (1)

this is stock radio, 6 pin, but way too small

travis401

iTrader: (1)

stock hvac. 5 pin


looks like that goes to something else.

crazymonkey16

ok, looks like you've got a gray, light blue, green, and two brown wires in your hvac... correct? (thanks SO MUCH for your help... it gets cold up here in PA in the wintertime! )
I'll look for those wires tomorrow and see if I can figure out what happened to that harness... of course, for all I know, the idiot that wired up the aftermarket radio I had to tear out used some of the hvac wires instead of radio wires. X[

fireburdluvr85

guys those look like the wires for the hatch defrost...... i haven't had the 3rd gen dash in over 2 years so its kinda foggy.

travis401

iTrader: (1)

ive got the hatch defrost as well and didnt see anything like that in the hvac/radio hole. i personally think it connects to something up higher in the dash and is disconnected and hanging down in the hole.

or has the wrong plug on it for the hvac

camarotucker

iTrader: (2)

The reason I said radio is I have a service manual and the radio connector was one of the only 6 pin flat connectors that it showed. It showed the HVAC as a 5 pin flat connector. Although it shows the connectors it gives no pinouts for HVAC or radio.

camarotucker

iTrader: (2)

These are all the six pin flat connectors in the whole car, Pack Con c322 (I think this is ECM related), door lock relay, gear selector switch, radio, wiper motor (engine bay), resistor module.

edit-this is off 91 model year

you have a manual or auto crazymonkey16?

camarotucker

iTrader: (2)

To find the A/C harness, from the 25 amp HTR A/C fuse there will be a brown wire that you can trace back to the A/C control head. It appears that the brown wirre is splice at the c202 but is the same color wire all the way to the control head.

side note: the gear selector switch does contain a tan/wht and ppl wires but makes no mention of any other wires.

travis401

iTrader: (1)

I may have found an answer....the tan and purple wires give it away.....it goes to the gear selector switch (you have an auto right?)

i found another post with pics of a gear selector switch that was cut off, all the wire colors match what you have there. no clue what they all do, but atleast you know what it is now.

Pocket

iTrader: (24)

We have a winner, its the auto shifter connector

Top two fat wires are the starter switch
Middle two are back-up lights
Bottom two P/neutral switch to the ECM

travis401

iTrader: (1)

i was wondering when youd chime in with the correct answer pocket.

DARKmj16

iTrader: (6)

neutrol safety switch connector is the name. its not the physical gear selector but the harness for the safety neutrol switch, which is a must for autos. itll still be there even if its a 5spd car, same harness used on all the cars. lol when i first saw the pic ik right away bc i swapped my auto for a 5spd and thats wut was connected to the neutrol safety switch

crazymonkey16

At first I was going to say, "No, you're wrong," because I have a manual... however, it was originally a 6 cyl engine, and now it's got a Cadillac LO5 v8... so it very well may have been an auto and the wires got left in there.
Camarotucker, thanks for explaining how to find the CORRECT wires... I probably would have thought of that eventually, but it would've been a couple weeks and lots and lots of frustration.
Darkmj16 - are there any adverse effects of leaving those wires alone? Or should I trace and remove?
Thanks so much, everybody... I've done a lot of work on this (like the rest of you, lol) and it bugs me when I can't figure something out. Thanks again!

DARKmj16

iTrader: (6)

well you could trace and cut them out, i dont think it would do anything. just if you ever want a auto youd have to splice back into those wires, personally im not dealing wit the headache of tracing them. im just tucking mine out of the way.

if you have a 5spd then theres a purple and tan? (not sure on the colors) that connect to the clutch pedal, and thats the 5spds neutrol safety switch (have to hold clutch downt o satrt, makes sure its not in gear and can jump forward)(or they got spliced together, like i did mine)

umm if you dont have reverse lights you need to splice into one of those wires and connect it to the tranny.

if the car is an auto now...then some1 halfassed it or something bc im not sure how it would start with out that switch connected, unless the clutch wires got spliced together.