Join Date: May 2016
Location: Hillsboro, Oregon
If it was truly "off", there shouldn't be any load seen by the bike's electrical system. The little radio wouldn't draw enough to notice..no more than any other tiny accessory (e.g., a Sena SM10).
If you're getting the pulsing (I do), then I suggest that it isn't actually off.
Note that when you first plug in the heated gear, it goes to 1/3 power, not off. It goes to 1/3 power so that you can have some heat if your controller battery dies.
I may be mistaken, but I believe that the heat-troller, if wireless, only transmits when the knob is turned. If not that, it only transmits periodically. It doesn't transmit all the time so it can avoid draining its batteries in a few days. Until you turn the knob (or it gets to the first periodic update), the heated gear will be on at 1/3 power and would explain the idle pulsing when you first plug it in.
Also, I had thought (just a guess) that the pulsing was not caused by idle stabilization alone but by the heated gear drawing current in an on/off pulse-width modulation at 1-2 Hz. While that frequency would be way too low for lights and other accessories, 1-2 Hz is plenty fast enough for heated gear.