I have limited my charging problem to this wire, where exactly does it go to??? a fuse? the ignition key??? and i know its supposed to read 12 volts when a volt meter is hooked to it, but is it just a switched ignition wire? something that can be rewired with any switched ignition wire?? mine isnt reading 12 volts for some reason but the wire doesnt appear to be cut or anything. PLEASE HELP.