My 420 sel 1986 just cut off while driving. Would not start again. Its getting spark. I hear the pump running when I turn the ignition. 18 months ago changed fuel pump, fuel pump relay at least thats what the mechanic charged me for at that time the car was not starting also. I changed the fuel filter 19 months ago.

any help would be appreciated. I am going to change the fuel filter tomorrow.

where is the fuel pump relay located and are there any pictures on line to find relays and fuses?