Okay I hooked up a jumper from the pos wire at the alt juction block directly to the bat pos post. That should have eliminated any resistance in the any of the pos wires. There was no change, the alt still has a 1 to 2 minute delay before producing full output at 13.8 volts. It did maintain 12.6 after the gp relay cycled off till it kicked up to 13.8.
Does anyone know what can be checked at the gp relay and what the specs should be? What all does the relay control?
I found a replacement ($250) but it list several things it controls other than the glow plugs. Is this the case, the gp relay controls several things?
Could the regulator be causing the delay?

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Darrell

1984 300SD "Ole Girl"
207K