Which fork bolts are we talking about? I snapped one in the top triple clamp because I was using, with a torque wrench, a "reference sheet" of K-bike torque specs I found on the interwebz. It had the specs for the top and bottom triple clamps inverted, and they are different. Very different, as it turns out.
Lesson learned, torque sheet in the trash, and I check Clymer's every time now.
I wouldn't run power for heat through any of those tiny wires in the switchgear. Enough problems up there as it is.
When I looked around at doing this myself, I didn't see any holes in my K75 handlebars, so I concluded I'd have to drill one in the bottom of the low center part to feed the wires in, then out through the bar ends. Project deferred til I have some other good reason to tear that all apart, particularly the brake reservoir. (Also, I have foam grips, and not at all certain the heat will penetrate those well.)