RoughRider, the quick and easy solution to what ails you is: Hook up a Battery Tender harness, directly to the battery, and route the non-battery end of the harness to exit from under the seat to a place whwre it is easily accessible. Mine is located directly at the front end of the seat.
By doing this, you now have a port that goes directly to the battery, for....charging the bike in slow riding seasons...for hooking up your Gerbing Heated Clothing...and for hooking up your air compressor.
That one harness wiring set-up will service several different needs, without taxing any aux. fuse on the fuse panel.