My dash lights and HVAC lights used to work just fine. I installed a new deck in my car one night and when i connected one of the wires (antenna to amp on the deck) the dash lights and HVAC lights shut off. I put it off for a few days thinking if i disconnected the battery and reconnected it would fix it. It didnt. I have command start and when i command start all my lights turn on as they should (including my dash and HVAC) but as soon as i put the key in and press the brake pedal (or anything) the lights shut off, even if its night time.
im at a loss now.