Then get a starter motor clamp on ampmeter. They are cheap. mine is made by Black Hawk. I have not seen them in local auto parts stores but I think JC Whitney has them. I put it in proximity of the wire (no need to break the circuit) that feeds all the glow plugs and put a mark where the needle registers. If it reads lower than that mark, then one or more glow plug is toast, so I move the clamp amp to the individual glow plug wire to find the bad one. Works great! saves time.
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Originally Posted by Brian Carlton
I've got a very good analog meter from Radio Shack but it only handles 10A.
Probably can't justify another $50 meter once every five years when I'd like to measure 20A. Besides, I'd put that meter in unobtainville and it would be useless anyway.
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