1994 Chevy k1500 OBS 5.7l AT.
The 3 bulbs in my climate control were blown so I got a pack of new ones to replace them. Note that I did not have illumination problems prior. After replacing the bulbs, I managed to lose all illumination on the dash, when the driving lights switch is turned on. With it off, the radio, clock, and digital climate display all lights up. Once I turn on the lights, absolutely nothing lights up. My dash is even completely dark. I had a similar problem a year ago and the driving light switch being replaced fixed it. I do not think it's that again just because I was touching a few other things during the bulb replacement process. I did not ever replace the rheostat. All fuses are good. I suppose I should check the wires coming out of the rheostat for power next. I personally am afraid I shorted something on a circuit board though the process.
Through replacing the climate control bulbs I also:
- disconnected 2 connectors under the ash tray area (was hoping one of them was for the radio unit). Not sure what they ended up being for but I reconnected them. I'll post a pic of them shortly.
- attempted to take apart the radio as a bulbs is also blown in there. After taking the container apart I realized the bulbs were covered with a couple of circuit boards so I reassembled it.
The 3 bulbs in my climate control were blown so I got a pack of new ones to replace them. Note that I did not have illumination problems prior. After replacing the bulbs, I managed to lose all illumination on the dash, when the driving lights switch is turned on. With it off, the radio, clock, and digital climate display all lights up. Once I turn on the lights, absolutely nothing lights up. My dash is even completely dark. I had a similar problem a year ago and the driving light switch being replaced fixed it. I do not think it's that again just because I was touching a few other things during the bulb replacement process. I did not ever replace the rheostat. All fuses are good. I suppose I should check the wires coming out of the rheostat for power next. I personally am afraid I shorted something on a circuit board though the process.
Through replacing the climate control bulbs I also:
- disconnected 2 connectors under the ash tray area (was hoping one of them was for the radio unit). Not sure what they ended up being for but I reconnected them. I'll post a pic of them shortly.
- attempted to take apart the radio as a bulbs is also blown in there. After taking the container apart I realized the bulbs were covered with a couple of circuit boards so I reassembled it.
