The first unit I received had a broken wire at the solder joint on the grip heater. I cannot stress enough how important a bench test of the unit is before tearing down the bike! The second unit was in much better shape. Installation was very straight forward. I chose to solder and use heat shrink tubing rather than the supplied connectors for my wiring. You have to remove the bar end weights on a VTX1300C to install heaters. On my test ride, 50 deg F, the grips only needed to be on the lowest setting to feel the warmth coming through. The chrome switch blends in nicely with the rest of the bike and is easy to use. This is the only way to get heated grips if you have a Brakeaway throttle lock. My rating would have been higher if the first set was as good as the second one.