[bharbison2500]

The button has more than likely failed. Mine failed basically the same way. I had choach power but could not get the chassis power back. I bought 2 if the power relays and recreated the circuit on a bench with wiring and pushbuttons. I tested the circuit made sure it worked. Then i tried it on the coach. I got the chassis power back on. I had to do this because the dual disconnect coach / chassis switch was not available for replacement.