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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Andy FitzGibbon on November 28, 2018, 06:57:51 AM

Title: Heated grip wiring question
Post by: Andy FitzGibbon on November 28, 2018, 06:57:51 AM

I picked up parts of a heated grip kit... wiring harness and switch, but no grips or instructions.  I'm curious as to the purpose of one of the included wires: p/n 61 12 2 303 023 (6 on the parts fiche). I'm guessing it's a ground, but I'm not sure where it would be installed.  It's the one in the lower left of the attached photo, with ring terminals on each end. The fiche doesn't give a good indication of where it's supposed to be located... it would seem to show it connecting to the plug (7) for the wires coming from the grips, which would make no sense, and which a ring terminal wouldn't fit into.

Thanks,
Andy


heatedgrips.jpg (39.96 kB . 768x576 - viewed 398 times)


heatedgrips2.png (30.69 kB . 768x542 - viewed 506 times)

Title: Re: Heated grip wiring question
Post by: Laitch on November 28, 2018, 12:41:53 PM

Does this link (http://www.k100-forum.com/t12066-installing-bmw-heated-grips#144395) help?

Title: Re: Heated grip wiring question
Post by: Andy FitzGibbon on November 28, 2018, 06:00:07 PM

No, I've looked at that one already. But thanks for the effort.

Andy

Title: Re: Heated grip wiring question
Post by: alexg on December 05, 2018, 12:33:34 AM

I had the same question. Ended up putting that aside on my drawer of useless parts!

Title: Re: Heated grip wiring question
Post by: Scott_ on December 05, 2018, 06:48:51 AM

After looking at the schematics I also agree that it's most likely a ground. However, if it came with the retrofit kit, my electrical gut tells me that it may be intended to replace an existing ground wire to increase it's current carrying ability.

The drawings show the brown wire from the grip connectors going to the ground joint with the headlamp, then from there to the frame ground point under the fuel tank. So it could be possible that the new wire is intended to run from under the tank to that point were the headlamp and grip ground connections join.

If the bike was "pre-wired" for grips(depends on the model), this section of ground should already be the upgraded 1.5mm size.
The bikes not "pre-wired" for grip only used 1.0mm wire size from the headlight ground to the frame ground point(only large enough for headlight load).