Hi, I have a 92 RS with the 5.0 TBI engine.

Recently, when I go to turn on my headlights none of my gauge lights work and the backlight for the radio is completely black instead of only dimming like it should. I'm edging towards it just being a fuse problem. If it is, what fuse would that be? Or if it's something else, what could it be?

Thanks in advance!

 

For sure check the "inst lps" 5 amp fuse in the fuse panel under the dash . If blown , and blows again when replaced with another 5 amp fuse try unplugging the radio before trying it again .

The radio going dark is not normal , especially when you figure that no power to the instrument lamps should mean no power to the radio's display dimmer circuit . So why would it do anything if getting no power ? Shouldn't it just stay at normal daytime brightness since nothing is "telling" it to dim ?

Good Luck with it and report back with your findings

 

 

can u guys help me out i have a 1992 firebird formula everything worked great on it and i noticed last night wen i opened the door the dome light didnt come in well i thought no biggie got in she started up as usual but wen i hit the head lights theres like no power i replaced the light switch and have checked fuses the motors wont run or nothin for park lamps or headlamps plzzzz hel;p

 

i have a similar problem, when my headlights are on my radio lights go out but dash lights stay on and i replaced the headlights switch with no success

 

Its the fusable links in front of the starter may appear fine but burns into internally

 

you think i should check that? ive checked everything possible under the dash and even swapped the radio out to confirm its not the radio acting up

 

Yes its just 3main hots i cut the links all the way out n wired heavy gauge wire and a big car audio amp fuse and did away with the links completlely no more issues theyre red n orange

 

ok cool i will check that out now. i was also reading up on the remote dimmer located on the driver side under dash panel, do you think it could be that?

 

Good possibility u can check it with a ohm tester

 

yeah i have a feeling its that. can you explain how to ohm test it and i'll go test it now and report the reading back. should i remove it to test it because i actually have the under dash apart

 

ok so i probed the harness to the remote dimmer and got about 30.0 ohms on a 200 scale and when i connected to the remote dimmer itself on all 3 prongs it was infinite like no reading and tried different scales and got the same reading so whats the sounds like to you?

 

I've had the dome light problem before but in my Camaro. If you also noticed, your door locks and cigarette lighter doesn't work too (that's if the firebird is set up the same). There should be a 20 amp fuse that ties all 3 of those in together. Idk about your motors on the other hand because idk if the Firebirds are set up the same

 

Is this remote dimmer you speak of only for Firebirds or for both? If so where did you say it was? Maybe that is my problem also

 

http://www.cvpi.org/archives/p71inte.../wsdindex.html

this is where i found the info but looks like only firebird/trans am. its hidden too, it was under the dash near the fuse box but this was on my 91 gta not sure about the camaros

 

seriously wtf the remote dimmer did not work!!!
92formulalukain, i'm now desprite and back to what you said about the fuseable links near the starter. how often do these burn out? and were you having this problem when you replaced yours with the heavy gauge wire and big car audio amp fuse?