I have a 1996 E34 518i. As some background, I had problems with water getting into the vehicle which only really became apparent when electrical problems started. The issue was that the water had spread all the way down the passenger side of the vehicle and the case containing the the General Module and the Relay Module was sitting in a puddle of water. Since then, I have managed to stop water getting in, and pretty much dried everything out. All the electrical problems seem to have gone away too.

However, despite everything else now working fine again, I seem to have lost power to the lights above the rear passenger's heads, and the interior boot lights. Could this still be related to water having got in previously? i.e. perhaps one of the standard relays in the case holding the GM and RM might have 'stuck' due to having previously got wet?

Thanks.