Light time. The relay keeps the glowplugs energized until the relay hits the time limit or the starter is used.

Do a search for violet wire. There is a good write up on it. That is what I followed. You want to use a relay if you do it to save your glow plugs. That is the low budget method. The more expensive method is to upgrade to true afterglow. GSXR has a good write up on that.

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

I did the factory Afterglow on my SDL, was pretty cheap if you know how to shop... I think sub $100.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]