Yep sounds like switch, wiring, or connector.
I've got an Empulse so can't guide you where to look, but if you poke around the foot brake pedal with a flashlight, you should see the switch. On the Empulse, it bolts on with 2 small hex head machine screws and has got to be cheap to replace. First, make sure the connectors on both end are in place and that you have continuity between them (can use a cheap continuity light or cheap VOM at any Radio Shack or auto supply store).