rickdonald 10 Posted February 27, 2011 Does anyone now the basics of the interior light loom and how it works? I was installing another light yesterday and two tires have crossed (that shouldn't have) I 'think' it was the positive and negative output form the light socket (cant remember exactly), and they shorted, I separated them quickly, but I think its done some damage. Now my interior light seems to be staying on constantly. even when i turn on the ignition and shut the doors. I have measured the voltages to the 4 pin socket to the interior light and they are just confusing me. There is one pin with two brown wires going into it, which is a ground, One pin with 2 reds, which is a constant live. Then another pin with a brown/white wire, that seems to be connected to one of the wires to the door switches, which is at 0v when the doors are open, then 12v when they are shut???? and the final pin which has a blue/black wire to it, and that doesn't seem to do anything. Anybody any ideas? I've had a quick look at the Bently manual, but cant find a wiring diagram for the interior light. Also noticed when I was looking at the door switches, they have 2 wires going to each of them, one at about 5v and one at 12v? when the door is closed the are both isolated, then when the door is open, they both ground? does this sound right? Any help would be greatly appreciated. Cheers Quote Share this post Link to post Share on other sites
dragon green 5 Posted February 27, 2011 Have you checked the fuses ? there are two fuses for the interior light,i cant remember which one`s they are,but they share other circuits ! does everything else work ? Quote Share this post Link to post Share on other sites
rickdonald 10 Posted February 27, 2011 Yer, I took one out to check it, number 21 or 22 I think. The one that does the main light, the Clocks and the spoiler I think, haven't looked at the other one, but everything still works. Just tried to have another look. Cant fathom it out, just doesn't make sense to me that there is a wire that goes +ve when the doors are closed, I would of thought if anything it would of been the other way around, if the light is supposed to come on when the door is open. Which is making me think maybe I have blown a diode or something one the light circuit board. Think your motto applies perfectly here ha " if it a'int broke. Dont fix it". Guess I'll never learn Quote Share this post Link to post Share on other sites
