Roy, if you hve a 6 pin connector you could install an additional brake light switch on the pedal to complete the circuit back to the light on your motorhome dash. You will need to supply power to the switch fromt he motorhome's 12 volt and back to the light's return wire.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7