Previous owner of bike had wired in a 12V socket into the bike (ignition controlled so not on full time). Works for for charging a cell phone and small things like that...was curious if anyone has any experience running one of those small 12V air compressors off of the electrical circuit on a 650? I don't currently own one but thinking that's probably a must have for any lengthy travel? Mostly want to make sure I don't create a second issue (dead battery, melt down wiring, etc.) while trying to solve the first (low or flat tire).