Technically what you are doing is bonding from battery to ground ie starter frame firewall. Looks good to me drawing wise. I would use at minimum 2/0 in either 12 or 6 VDC for starter ground - go there first then you can have a bond from starter ground point to cab or you can run this bond separate from battery bond to the frame on the way to the cab. This one I would do in # 8 or so maybe # 6 if you have lots of load ie 130 dBA sound system
Dan Bentler
Dan Bentler
