If you're actually measuring (reliably) 0.5 ohm from the
relay to the glow plug (and not including the glow plug)
you have some seriously bad wire there.
Jim - That's exactly what I did. I disconnected the wire at both ends and
measure the resistance of the wire alone, not including the GP. It was
0.5 Ohm. I connected the wire to the GP, turned the key on, and measured the
voltage at the relay. It was 12 volts. Then I connected the wire to the relay
and measured the voltage at the GP. It was 10 volts. The voltage drop was 2
volts. So that tells me that the current across the wire is 4 Amps...not very
much. Did I get it right?
Bruce
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