Originally Posted by Attico
I ran mine on an old honda on the running light circuit.
They don't pull much usually
I am in the process of installing Hot Grips heated grips on my bike. I am wiring it to a relay triggered by the license plate light. The resistance of each grip is about 10.5Ohm. They are wired in parallel which means they will nominally each pull about 1.15A, 2.3A total. That is not a huge amount, but enough that I would not want to tied in to an existing circuit.