7racer

The problem is that I had too many things done to the car that its making troubleshooting difficult.

I had a new wiring harness put in. The HVAC dash out to replace bulbs and get the front piece carbon fibered and some water in the relay box (have since replaced all relays).

The wierd part is that the LED light on the dash never gets power and lights up, however all of the other controls on the HVAC unit works and powers up. I did replace just the AC switch with a used one, but that didn't seem to work.

I'm just stumped. I am trying to find someone in the DFW area to do a temporary swap of the HVAC panel to triple check that it isn't something with the switch.

Any ideas? According to the trouble shooting it could be the "yellow wire" to the ECU, but I don't think that would cause no power to the LED AC switch light? I also took out my PFC and placed the stock ECU in as a long shot and still no go.

potatochobit

iTrader: (1)

does your cigarette lighter still work? and the radio? they are run off the same harness.

Hyperite

Pretty sure it's a bulb, not an LED

7racer

yes they do....radio and cig is fine, thats what has me perplexed

7racer

nope its an LED...I took mine apart when I swapped in the new switch. This one isn't lit by those bulbs that you routinely change in the instrument/hvac cluster.

7racer

and just because your post some how annoyed me to no end and help me figure out my problem here is a pic of a disassembled AC switch where you can clearly see the LED

LUPE

kj,k,u

CantGoStraight

If you take the littl orange cover off the thing in the center you'll see a bulb under it, as a mater of fact you can see the bayonet turn ccw to remove the socket. Now that I've said all that i see I'm referring to the back light and not the one that lights up when the A/C is on......ok so your both right ! ! ! !

7racer

yes the LED is the one that doesn't light up. The bulb does when I turn on the headlights.

Hyperite

Huh, fair enough. The A/C works and all that, but the light doesn't turn on when you have the button pressed? Try jumping the LED with 12V and see if it comes on, then try tracing the switch wires back through the HvAC console and see if one of them has come out of that ribbon-cable connector.

7racer

Actually the AC works only if I jumper the relay in the front. Otherwise, when I press the AC switch it won't turn on, nor will the light go on. With everything else working in the HVAC unit I don't think the switch is bad.....

I have the HVAC console back apart and re-sat all of the connectors and still same problem. I know the switch is getting some kinda of power because the "bulb" does light up when I turn on my car headlights....I just can get the LED to light up when I depress it nor the AC to kick in.

7racer

It looks to be a wiring issue. WIERD.

Thanks to Cavellm for letting me do a quick transplant. We swapped out his HVAC unit and plugged it into mine. Still no LED light and no engagement of the AC

ACK!

7racer

well I ending up giving up on the wiring as staring at the wiring diagram was giving me a headache.

Sent the car back to let the pro's do it at the shop and a little while later...FIXED!

It seems that when I pulled the dash to put in the black carpet I plugged in a connector by the blower on backwards. That was IT??!!! Dammit. Anyways, AC is working now just need to get it re-charged.