Quote:
Originally Posted by cardo
Manual says the coil resistance for the relays should be 3.5 to 5.1 ohms if it helps, would seem unusual for both relays to fail at the same time. Are the relays energising when the PTT switch is operated?, I would be more inclined to suspect a connection problem.
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I was thinking the "both at once" scenario pointed more towards power to the relays, which is why I suggested verification. Check the output pins (should go to either a solenoid between the relay and pump motor or direct to the motor if it's a big relay) and see if the relay is actually switching.
jky