johnsonmtz
Newbie
The back lighting for the 4x4 floor shifter and the climate control module are on constantly in my '89 K1500 and will not turn off causing the battery to drain. The lights remain illuminated even when the truck is not running and key is removed from the ignition. The backlighting for the gauge cluster only comes on with the headlamps and I've also confirmed the dome light only turns on when the door is opened or through the dimmer switch. Finally, we've also confirmed the courtesy light in the engine bay is turning off when you close the hood. So, it seems all lighting circuits and switches are working properly except the climate control and 4X4 shifter backlighting.
I found a source to download the wiring schematic for the truck but have to admit I haven't fully studied it yet to track down these circuits. I can turn a wrench pretty well but electronics and wiring aren't my strong suit so I'd appreciate any help I can get. I would appreciate any information for wires/locations to trace and troubleshoot this issue. First off, I'd like to confirm when these lights are supposed to be on: is it always on when the key is in the run position or is it only when the headlamps are on? Second, where do these bulbs get power: is it through the headlamp switch or does it come through the run circuit in the ignition?
Thanks.
I found a source to download the wiring schematic for the truck but have to admit I haven't fully studied it yet to track down these circuits. I can turn a wrench pretty well but electronics and wiring aren't my strong suit so I'd appreciate any help I can get. I would appreciate any information for wires/locations to trace and troubleshoot this issue. First off, I'd like to confirm when these lights are supposed to be on: is it always on when the key is in the run position or is it only when the headlamps are on? Second, where do these bulbs get power: is it through the headlamp switch or does it come through the run circuit in the ignition?
Thanks.