hi all got an electrical issue with my car. the dash lights are staying on even when the car is locked. I hear a buzzer noise after taking the keys out of the ignition. I have used a multi meter on the the grey and black wire that goes into the dimmer switch and it reads 12v so am i right in thinking it is always live.? Ive repaired the wires and the fuse no longer blows now. Just need advice on what to do next please help.