I was changing out my glow plugs (which was a process in itself) and while putting everything back together I accidentally snagged a wire and popped it out of a plastic connector that was plugged into the cylinder head behind the ip, between glow plugs 1 & 2. What is this? Do I just solder the wire back onto it?

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temperature sender for the gp relay? follow the wire and see if it goes to the gp relay box on the drivers side fender behind/near the headlight area

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1981 NA 300D 310k miles

that could be the temp sender for the dash gauge. soldering the wire back to the connector should restore it's function.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I'll get on this today