I have the seat belt warning light on with my 95 e30. Garage has said it is the wiring loom 'probably'. Anybody care to clarify this as itseems a bit odd. Cannot find anything on web searches though: would have expected that the wiring would be simple 2 wires to the seat pad and two to the pre tensioners. Do pre tensioners indicate electrically if they have fired or are no good? I can do electrics if I know what to do. Alan.