Quote:
Originally Posted by tangofox007
What is the basis of your belief that the relay won't close unless some minimum number of glow plugs are "working?"
Why do you believe that the relay opens concurrent with starter engagement?
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I've seen it in action. Unplug 3 of your glow plugs and turn the key and your GP light won't come on. But I may be wrong about the relay not energizing the GPs. That may be incorrect. I do know the dash light will not illuminate.
As far as the starter engagement shutting off the GPs, that is what the purple wire on the 4 prong harness going to the relay does. It is a signal voltage to the GP relay to shut off.