Hi there I am working on a 1986 500SE and am having trouble with the fuel pump relay as when car is shut of the relay stays energized and pump runs till batt is disconected or relay is removed and reinstalled. Also one of the relays in the under hood fuse panel labeled H is on at all times does any one know what this relay is for? thank you! also the fuel pump relay is marked( 002 545 3305 Zyl.6000/min KVS 89 84 24 86 M03 Kickd.)