Well, I managed to find a brand new set of Gen I Yamaha heated grips. However, as other threads have confirmed the instructions are not well written, and I am not sure where the "negative" side with a female and a male bullet connector, of the heated grips harness connect on the bike. The instructions show a diagram with the negative side of the grips harness connecting into the turn signal lights wire harness. Could those that have installed this kit on their Gen I FJR chime in. Thanks.
Here is a picture from the instructions that shows the disgram.
Here is a picture from the instructions that shows the disgram.