Yesterday I lost my Glow Plug light.
Seems to start and run fine, but checking the system anyway, the light never stays on long.

Following the diesel giant guide, and what I could find here, I have verified proper power into and out of the relay.

Pulled 1 GP and it measures 0.5 ohm.
BUT the wire reads 190 ohms to all GP with them installed in the car. Did not read the wire where I removed the GP. I will go do that.

So, is the bulb out, or as I am suspecting, the wire harness is bad. What am I missing here.

thanks
Doug

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83 300SD Dark Silver Dark brown inside