As per this thread: http://www.advrider.com/forums/showthread.php?t=57153
Occassionally, on BMW hexhead motorcycles, water can leak into the fuel pump controller causing it to fail, blocking power to the fuel pump, leaving you stranded. This cable bypasses the failed controller and connects the fuel pump to an accessory power socket allowing the bike to start and run.
We recommend connecting the accessory port directly to the battery and that it is fused. The stock accessory port has a 5 amp limit and the fuel pump can trip the canbus virtual fuse with it's greater than 5 amp draw. To install the cable you need to carry a T-20 Torx socket in your tool kit.
I'll be fabricating a bypass cable of various sizes and will have it available in 2 weeks, along with a website link for you to purchase.
Please show me how much interest there is so that I can order parts to supply the demand.
All Cables in Stock. Now Taking Orders.