gmcman,did your rear defrost start working after you replaced the switch. I have the exact same problem.

 

Yes, it did. Coincidence? I don't know.

 

My dimmer switch will cut the interior lights on n off but it will not properly control the headlights like in the middle setting only the parking lights are supposed to be on but that isnt working

 

My husbands 03 MC is having the same issues. He too is having to use a flash light to see how fast he is going. I am going to get his to try this and see if it works on his but if anyone has any new tips please post them also. Thank you

 

My problem ended up being the light switch itself.

 

Thank you. We are going to look at ours later today and when/if we figure out the problem I will post it on here. Thank you all again for the information and help.

 

Does anyone know what causes the rear lights of a '05 Monte Carlo to not turn on at night?
The headlights turn on without any problems

 

[QUOTE=seal0716;187239]here ya go gmcman101 and anyone else who has had this problem. I took everything apart and got my old one out so you could see what Im talking about. This is what causes the dash lights to go out at night but be on in the daytime.

STEP 1 : Take apart the dash to get to the dimmer switch, take the dimmer switch off. (All together, 6 screws)



STEP 2: Unhook the wire harness and look at the connectors, there is most likely a burnt connector as you see here in the top left. Theres your problem

so i did this but mine is in perfect condition. 12v grey wire is dead so is the 2 amp fuse for the steering column. Got no power at at it at all.. Is there a relay to control these lights? I have no guage illumination at night no prindle at night no dome lights or interior light but do have rear defrost.. Im so confused right now.

 

Question-- sometimes when I flick from brights to dims, I get -- no lights (oops)! Would this problem be related? Also sometimes my dash lights don't come on.

PS Yes I am back after a long absense. Hi everybody!

 

Welcome back. Not sure as I haven't experienced that but I had all lights working except headlights and I had to replace the turn signal multiswitch to get them to work again. Maybe could be an issue with it when you click it for high beams.