Check your fuses first. It should be easy to determine whether you have a blown fuse.
The older coaches did not have a relay system for toad lighting. On my prior coach, I would blow fuses when applying brakes (lights) with the 4-way flashers in use. Turns out this was the same circuit as the cruise control.
'07 Winnebago Journey 34H - CAT C7, Koni's, MCU's, SS Bell Crank, Safe-T-Plus
'07 HHR Toad, SMI AFO, Blue OX