hi everyone, always thankful for new ideas, and answers.
What size wiring is needed for a glow plug? for a 300d 1991, and can you buy the single wire rather than make it up yourself?

I found an open in the #3 glow plug and proceeded to replace it,,,, without checking the wiring for continuity,,, 2 hours later, same problem,,,,
found that wire had an open from the harness to the plug,
thanks for any help,,,

 

2.5mm