BMW K bikes (Bricks)

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1Back to top Go down   Wiring - current carrying capacity Empty Wiring - current carrying capacity Fri Nov 22, 2013 2:13 pm


active member
active member
Hey guys.

I was just installing Oxford heated grips on my 100RS16v. All is finished now, and after a testride everything seems to be working! Great!


I didn't connect the power supply of those grips directly to the battery, as the manual told me, but to the connector for OEM heated grips. (so they don't drain the battery when left on!). While doing so, I felt like the wires going to that connector were really thin, and now I start to wonder how much current I can draw through without setting fire to the tank!

Thus, the question is: What power rating do the OEM heated grips have? (oxford claims theirs are 50W max)

Or maybe I should put it more general and useful for everybody: what's the cross section of those wires (and 90% of the rest of the wiring), and what is the maximum current allowed?

Thanks a lot!

1989 K100RS 16v
1991 K100RS 16v - For sale
1993 Ducati 750 SS - For sale
1992 Ducati 907i.e.


Life time member
Life time member
About 22W per side for OEM HGs.

Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT

Rick G

Rick G
The thinist wire used on a K is 0.5mm and that will carry 5 amps without problems so at 50watts you will only draw 4.2 amps then all should be OK.

"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama

Bikes 2004 K1200GT 1998 K1100 LT, 1986 K75 GS.

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