Installing a powerlet bracket on left frame, then a powerlet plug straight to battery fused, all the problems with BMW chargers are no longer an issue including using the specific can bus BMW charger.
I just got my parts today and it all fits in the factory predrilled mtg hole of the rear left frame no drilling necassary and accessable for the passengers heated gear even with the saddlebags on and also as a aux plug in BMW style for any mfg standard battery tender or charger out there using the BMW style plug.
PARTS: PKT-042-12 Powerlet Soket Kit 12" Harness
PBR-007 Rearset facing forward Bracket
"PKT-042-12" Search Results - Powerlet Products
"PBR-007" Search Results - Powerlet Products
HERE are the Picks, Need 3/8 drill for the harness access into the battery
Need Silicon to seal harness
Need very small screwdeiver to remove outlet plug terminal so harness will slide through the 3/8 hole see pic
Need washer 1/8 deep to take in the space on the other in of the muffler bracket I used a rubber washer see pic at http://www.i-bmw.com/showthread.php?t=37808