I need to replace fuse box in my 89 190 E. I remove the 2 nuts but can't see what keeping it from coming out also the relays in the fuse box what are the correct ones that belong in there?. The one on the driver side is missing and 2 of the pins been jump by a wire with a fuse (not my doing). That how it was when I got the car it seem to be for the fual pump.