[dsraven]

ground needs to go to engine somewhere AND frame somewhere plus to body somewhere. some will go to engine and a separate one from engine to frame and to body. anywhere on the engine will work. you could go to the engine from battery, then from another place to frame and/or body. a separate ground to the rad support is also a good idea since all the lights up front ground on the rad support. it could be from the frame to the rad support. so battery to engine, engine to frame, frame to rad support. battery to engine, engine to cab, OR, battery to cab as an extra wire from the main battery cable.