i have read the procedure for hooking up the batterys. as soon as i touch the positive lead it starts welding itself to the post. the switch in the cab is off. i have cleaned all the cable ends and where they connect. i put in a new ground from block to frame. the wires on the pushbutton to starter are tight. the only thing not right is the pushbutton on the floor, the top is missing.it still goes in and out though. the starter turns the motor just fine except for all the sparks from the battery,lol, any help would be greatly appreciated because i am at a loss as what to do next. thanks , larry