i have a 2000 monte and for the life of me i cant figure out why the dash lights, heater lights and the lights in the stock radio dont turn on. the radio lights are normal during the day, but when its night time everything dies. it doesnt matter if i use the light switch or not. any suggestions on where to go from here??????

 

Just a thought and may sound overly simple but make sure the dash light dimmer is adjusted. I have seen this before and more often than not the dimmer is turned too far down. Check the easy stuff before getting to complicated.