I think Kent has an 90 amp there. not 100% on that.
it's simple for a test of the relay though. start the car, notice the voltage, then unplug the glow harness. if the volts immediately go up. pow problem is found. if volts do NOT go up, then it's someplace else.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!