Yesterday I replaced or rather swopped for now the lights illumination on the left hand side air vent switch becuase the little globe was blown. It is a 124 '88 260e. As I was putting it back I must have shorted it by mistake and now everything doesn't light up on any instrument. Its not one of the fuses is the fuse box and everything else works including everythng on the same fuse as the illumination. What on earth could it be? PLease can someone help!