Moto season soon to start here
Had a few painful commutes last year in the teens
Installed Polly Handlebar heaters with a relay to turn off when bike is off, took me parts of two days.
Buried the wires thru the top triple, room for relay frontside of battery, switch located leftside bikini fairing just
above front left blinker stalk.
Used 18ga wire for 12V & gnd, seems sufficient.
I'd show heater wires but they are buried in the handlebard and exit thru top triple.
Nice and toasty, pretty pronto (tested on my first ride (quick 20mi to clean out the cobwebs).
I'll try posting pics, be patient.
Followed thread on ADVRider, Canyon Chasers, very good instructions.
these work for me, complain if you must
Relay (haven't tidied the wires up yet)
Switch & wiring looking from front - headlight bucket removed - attached switch to fairing
Switch location from rider viewpoint