Join Date: Jan 2009
Location: Macclesfield, Cheshire, UK
Mentioned: 0 Post(s)
My bike has Oxford Hotgrips, these say wire to the battery. However the hotgrips do also have an inbuilt voltage sensor thats turns them off if the voltage drops below a threshold, which as far as I can remember is the only grips that do.
If you are concerned about wiring the grips to the battery and leaving 'em on, then consider fitting an auto relay so that the grips only have power when the bike is on.
connect a fused feed from the battery to the relay (Pin 30)
connect pin 85 to chassis ground,
connect pin 86 to sense circuit
connect pin 87 to the grips
the pin numbers refer to a standard circuit.. most realys are 4 or possibly 5 pin.
depending on what you prefer, and where your relay is located the sense circuit could be the tailight or say the (dipped) headlight it doesn't matter, what you want is a circuit that is always on when you need the power to the grips.
For me I chose to add a secondary fusebox under the seat so I peeled back the wiring to the tailight and soldered a splice cable onto the power to the light (not the brake light or ground) to provide the switching power / sense circuit to the relay. took that power to an additional fuse box, and break out the power to any additional devices as required. If all you have is heated grips then you don't need the additional fusebox, you coudl jsut wire from the output of the switched power on the relay (pin 87) straight to the grips. make sure you have an appropriate fuse somewhere in the circuit.