Now would be a good time to put in a full manual control of the glow plugs....If you just don't like voltage ,current,ohms and watts....this is the way to go....I have a 1979 300D and switched it to the parallel glow plugs with a manual switch and it cranks like a new one now....

Lots of info on the forum about this simple mod.....best way to go for pure reliability.....you probably need a fast start anyway to scoot away from those little cyclones that love to chew up the coast down there.....

That deep socket is a heavy duty fuse...gonna have to pull some serious current to pop that thing...!

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1978 Yellow 300D (The Mustard Toad)
1980 Blue 240D (The Iron Toad)
1989 Grey Mitsu.4WD Mighty Max Pickup (Needs a Diesel transplant bad)

(Open the pod bay doors HAL)