Warm & Safe Heat-Trollers are true pulse-width modulating controllers, famous for their high quality and reliability.
This is not an old-fashioned rheostat. Heat-Trollers cycle current on and off in seconds, depending on the setting you choose. They do not heat up and actually reduce amperage draw, on your electrical system, when turned down.

SSMHG is a Single Hand-Grip Controller.
The control knob and LED are potted in a box, at the end of a 5ft extension cord. This can be attached with hook & loop or other means wherever you want on your vehicle. The actual controller is safely hidden inside the vehicle.

Hooking up heated grips is dead simple.
2 wires for ground and positive and 2 wires to the heated grips which are usually wired in parallel. (check with grip manufacturers manual when in doubt)

Warm & Safe Heat-Trollers are a great replacement for the many cheap Chinese crappy controllers usually supplied with heated grips.