Forum Discussion
dougrainer
Jun 14, 2022Nomad
With Engine OFF, the Relay will have 12 volts on EACH large post. One side will have chassis battery voltage and the other will have Coach battery voltage. Since you have NO VOLTAGE on one side that means the cable that is dead is NOT connected to the coach battery system. The Relay system IS energized by the chassis battery and chassis battery Ignition side wiring. What you have done is just replaced a part and NOT checked out WHY. This can get expensive. Doug
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