glow plug problem

[markheaney2]

hi there i have a glow plug out on my e320cdi year 2000 the problem i dont know which one is out, on my year 1997 merc when you pull the plug out of the glow plug relay all the pins are numbered so you can multi meter the pins and know which cylinder is off on the e320 there are no numbers on the pins i have one with an open circuit but cant tell which one this pin relates to any help would be appreciated thanks

 

[Tinkerer]

Aaagh, so don't you just do a continuity test on the wire when disconnected from the glowplug that should tell you which one it is ........