That is what I was afraid of. I've done the headlight mod and want to put some grip heaters on. But wasn't sure if I tied them into the headlights if there was enough power there since there is already extra load with the addition of constantly running two lights. Thinking about using the power to the horn? But not sure if there is enough power there either since the power is only for the horn. I want power shut off to the grips when the key is off so I don't come back to a dead battery after I leave them on after shutting off the bike.
Nuts and bolts I am ok with. Electrical and wires not even close to knowing what I am doing. The dealer wants $120 to install the heaters.