Lights on the climate controls won't go on. Is that a burned bulb or a fuse issue?

next I would check wires going to fuel gauge and climate control .more than likely when you took out radio the wiring might had come loose. if still no lights you can put back old radio and see if you have lights. wiring might be part of all three.then it might be possible those bulbs for fuel gauge and climate control might just have burned out especially being an 85

Hello, and welcome to fixya! The reason that you are able to hear the climate control system and not feel the air coming out of the defroster, is that the damper (this controls where the air is directed when you change the vent selection on the climate controls) is not operating as it should. The damper is controlled by vacuum pressure, and the usual culprit is that the vacuum hose running to the damper is either loose, or defective(usually dry rotted) which will create a vacuum loss. Without the vacuum pressure to operate the damper, you will lose some, but not all functionality of the vent selection. I recommend that you check the vacuum line(s) that run to the damper, making sure that the vacuum hose is connected, and free of defects, like cracks, holes, and that the connections are not loose as hoses can and will lose their elasticity, which will create a vacuum loss. If that is not the issue, I recommend that you remove the climate control vent selector and make sure that all of the connections to the control panel are secure and free of defect. If that is not the issue, you may have a faulty damper (which is rarely the case), and that will need to be replaced. As far as the climate control lights not working, that could be a simple as a blown fuse, faulty bulbs, or even as simple as a poor connection to the bulbs, or to the control selector. I highly recommend that you disconnect and reconnect all of the connections to the unit. When you check the fuse panel, remove the fuse(s) & check for faults and make sure that the connection the fuse is making in the fuse panel is making a solid connection. I hope that you have found this information useful, are able to resolve the issues you are experiencing.

what kind of vehicle is this? very important detail. alot of vehicles have multiple bulbs behind the instrument panel. if these bulbs burn out you have to remove the panel and replace the burnt out bulbs.

On some vehicles when a light is burnt out it turns that whole section off on others the lights are individual and can burn independently. ----------------------------------------------------------------------
Multidiag Actia

check the turn signal flasher,also check the bulbs some autos,are designed to do this.
If there is a blown bulb,the turn signal on that side will not blink,but will burn steady to tell the driver,a short in wiring can also cause this

It is supposed to be illuminated. It may be a fuse or a bulb inside the climate control module. You can call the dealer and they will tell you if the bulb is replaceable or if the entire module must be replaced.

The Trainer 40 When the compressor won compress

back lighting for a couple of the climate control dash board buttons are not working. ?????? wouldn't be a fuse , bulb probably . You would need to take the component apart to replace the bulb .

These are all connected to the same circuit. Check all bulbs and relays , fuses or fuse wires. Fuse wires are wires that burn out if a short is found. The relays maybe under the hood in the "black fuse box'. I will appreciate yourthumbs up if this helps .

for the 99,

Set fan knob to #2 position

Grab and pull straight off. bulb is in there....

the 93' may be similar, but I do not recall

I have this same problem, have you found a way to fix it?