Chopper introduced a Deltran wire harness for $19.00 that has a 12V Covered Accessory outlet to 6-8 ft fused wires to dual plug that fits the Battery Tender pigtail plug that goes to your battery. An alternative is the Kuryakyn 12V Power Point that mounts on your handlebar, but is $69 if memory serves. I made my own Deltran-like harness using H-D Acccessory outlet (for Touring bikes) $18 and wiring it to Deltran pigtail using heatshrink tubing, but make sure you check polarity so that 12V is fused and goes to the center pin of the 12V receptacle.