OK, this is going to sound like an advertisement, but I don't work for Widder.
I got them wired up this afternoon and it was easy. The gloves come with a fused battery adapter that has connectors that are attached directly to the battery posts. The wires are zip-tied near the battery to keep any tension off the leads and the main power plug is run out between the tank and seat to the left.
A wiring harness with ON/OFF switch is included, which connects the gloves to the battery adapter. The harness is draped across the shoulders and each glove plug held between the fingers while a riding jacket is donned. The third plug is allowed to run out from under the jacket to the left and is connected to the battery adapter after mounting the bike.
I took a 110-mile ride with them this afternoon. Woo hoo! The gloves are lightweight and pretty warm by themselves since they are lined with Thinsulate. However, when your digits get cold, simply reach down, flip the switch, and your hands will quickly start to feel like they're in a toaster oven. The weather was actually pretty warm (50s F) today and I couldn't keep the gloves turned on the whole time. I can't wait for a 30 F morning to really put these to the test.
One important note: Widder says these gloves run large and they aren't kidding. I normally wear a size M, so I ordered a S. The S were still too big for me, so I exchanged them for size XS. The XS are OK, but I think XXS (the smallest size available) might actually be best for me. Still, I'm not sure whether or not I want to call the mailorder company again and do without the gloves for another week while the exchange is taking place.
Anyway, these gloves get 2 thumbs up from me!