My email is acridcola@hotmail. Com
it's not auto AC,
I'm not sure which post this was I don't see the starting topic.
The problem I'm having is all the related wires or relays I find for the rear defogger are grounded/NEG.
There's a relay on the back of the Ac control that sends 12v NEG to a blk/wht wire. When the button is on.
This wire goes to the lower middle connector on the rear side of the fuse panel.
Even when the relay is off or unplugged this wire is grounded by another wire on the top middle connector on the rear side of the fuse panel. Lt is lt blue/lt green stripe wire.
The wire from the driver side grid is also blk/wht and it is also grounded, unplugged at the grid. It goes to a big yellow connector by the ignition harness.
Somewhere the two blk/wht wires connect, I cant see where, as they are wrapped up in the harness and go up under the dash, as does the lt blue/ lt green wire.
I've unplugged everything under the dash, BCM, every connector I can see, even pulled all the relays and fuses from the PCM etc.
The lt blue/lt green is always Grounded.
I'm totally confused why every part of this is NEG when the driverside grid needs POS to work.
One thing I can't find, is where the defog timer is, per the owners manaul there is a 10 to 5 minute timer. However the lit button never goes out.
Sunday, February 1st, 2009 AT 7:12 PM