old thread but hey what gives but anserws right!! ^^ thread jack again lol! so right now i have an extra batt in the back i only have a ru of positive to the back and the batt in the back is grounded to my frame its ok right? just of course there is good ground/conductivity in the back right ? i also heard when connectiong a batt from front to back in parallel it creates a diff load or amperage can someone explain?? and hows your system doing OP?? did everything work out for you?