I have a 77 300D. It has the larger size I am assuming loop style glow plugs, and the small relay up on the firewall. I have not removed the GP, but they ohm out ok in the head.

Does this system also glow for about 30 seconds, like the one in the 83, or only as long as the light is on? Having starting issues due to the cold weather, everything seems ok, except the engine is worn and needs changed. Any other keys to sweet talk this engine into starting when it is on the cold side?

I need to get about another month ot of this one so I have time to swap it.

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83 300SD Dark Silver Dark brown inside