I just had the identical problem with my 2003 LTE. Last week I changed out the left grip with one that I had bought off of ebay and the problem is cured. What a job, I might add. The connector is difficult to get at, and once you are there you may as well plan on replacing the connector. I destroyed mine trying to get the wires out. It is something you may want to do during a 12000 mile check. With the tank out of the way, the connector is no problem.
Remember to use a feeder wire as you pull the old wires from the handlebars, so that you can feed the new one back through.
The wires from the right and left grips meet in that connector( 2 black and 2 brown)
Hope that helps,
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747,891 miles on touring motorcycles since 1990
IBA 45658 MOA167437
2000 LTC 90,600 miles KIA (new)
2003 LTE 164,188 miles Silver (Purchased with 1687)
2008 R1200RT 176,196 miles (Purchased with 16458)
2017 R1200RT 96,669miles (new)
Total BMW miles 509,508
1982 GL1100 rode 84108 miles (bought with 12012 sold 96120)
1988 GL1500 rode 12067 miles (bought with 19893 totaled 31960)
1989 GL1500 rode 142208 miles (bought with 20302 sold 162510)
Goldwing miles 238,383
Last edited by kellenbenz; Dec 15th, 2007 at 5:50 pm.