When my 94 breakaway wouldn't start (Cummins 5.9) with the engine batteries, I pressed the aux start switch. It failed to engage the house batteries. I checked the electrical panel on the driver's side and both 5 amp fuses were good. Anyone have any idea where the relay is? Thanks,
Rick

Can you (or anyone outside) hear a click or a clunk when the aux switch is pressed?

Hi Bill,

I don't hear a click. I will have someone listen while I work the switch.

Thanks,
Rick

on our 94 Breakaway, the aux start relay is located under the bed. Its on the firewall that seperates engine compartment from the interior electrical components. On ours, the relay closest to the driver's side is the one to check. hope this helps.