this is more a question out of curiosity, but i've switched to a one wire alt, and no longer need the factory plug. so, i was taking it out last night and trying to eliminate the wiring altogether. i noticed that the brown wire (which i thought was hook to my volt guage, but isn't) has 12.5 volts with the key turned to ignition. just wondering why? i'm sure this is a dumb question...but i like to learn :lol: