Ok I just picked up A 96 jeep cherokee with no radio ...... The dome light worked when opened doors and when you turn *** all the way to left with out ignition on or with it on... ok so I just installed the new radio and the owner before did a hack job in theses wires he did not use adapters pice so this was not easy ok radio is in and working I could not find a constant wire from the jeep so I hooked the red and yellow together and after I did this the dome light only works when ignition is on all the way or turned back all the way idk what is going on it was a super hack job