Hello all, my car had a loose fitting fuel pump relay. I would wiggle it and the engine would shut down. I put a brand new original from mercedes and it does not wiggle as much so problem solved for now. My question is about the side "tabs" on the relay case, is it supposed to "click" into position ? I did not see any tabs inside the fuse box that would catch the ones on the fpr housing. Car is a 1984 380SE canadian spec. Cheers !