I recently had the rear brake light conversion done to my car, through a relay etc to the switch. I didn't do the work as I am not v good with electrical stuff.

 

Anyways, When I flick the switch (whilst driving) it blows my light fuse in the drivers footwell, but it doesn't blow when the engine is running and the car is stationary.

 

Can anyone offer me any ideas as to why this may be happening?

 

cheers

but it doesn't blow when the engine is running and the car is stationary.

 

 

In gear or netural when stationary or both ?

Thanks for the reply Stu. It blows when in gear and moving but is fine out of gear whilst stood still.

 

I am crap with electrics so bare with me here. When the 'electrical auto engineer' put the switch in would it need an earth? I am just thinking that he may have mistaken the lights circuit as an earth as the wires look like earth wires. I read that whilst doing a search but really haven't got electrical savvy at all.

 

Anyone?

Weel there are wires that tell your ECU that the car is in netural.

I have a feeling that this wire may have been used in your ligh set up. Which is why you are probably shorting out when the car is not in netrual.

 

What rear lights do you have now ?.

 

If you check the manual in the FAQ, it will tell you what wires go where. But have a few inline fuse holders and plenty of fuses available, becuase the last thing you want to do is blow your stop and tail sensor box (only about £10 2nd hand, but no easy to get hold of).

Nice 1 Stu. I will replace the fuse tonight and check to see if it happens if the car is stationary and in gear. Actually come to think of it the fuse blew when the car started to move putting it back in the garage so does this idea still hold up?

 

When the fuse blew, all I had was full beam, no side lights and no rear lights at all and also the fog light switch didn't work. Bit of a downer when you are in fog on the M40 :shock:

 

I have standard rear lights as well :cry: