its got banjo bolt and all i can see is the wires coming out of the top.i joined it somewhere under the tank near the regulator.not sure how to describe it just know that i followed the wires from the rear brake banjo bolt and hacked in somewhere in the ,middle.cheked connections and are fine.i do know there is a switch/sensor for the brake that connects when brakes are operated,a circuit is joined by magnet i think(oposite polarity) never heard of it before.anyway on my bike this sensor is all in one unit with the regulator,coil,interupter,digital spedo,etc and is expensive just to fix brake lights.hoping its just rear brake light switch.passed my d.a.s last week and want to sell so i can get vfr.oh sorry bike is 50cc moto/enduro husqvarna.