PreGlow Relay Mapping for 98 E300
 

This had come up on some previous threads in the last week.
I replaced one glow plug on my 98 E300 and while I was doing the work I mapped the PreGlow Relay Plug contacts with their corresponding glow plugs. The wiring sequence in the plug from the harness was vertically oriented....which I didn't expect.

1 3 5
2 4 6

#1 being the front glow plug and #6 is at the fire wall behind the Oil Filter.

Cheers