Remote battery post...cables ?

Depends on how well the battery is grounded to the frame. When I added a remote ground I cleaned up and secured the original ground cable from the battery to the engine. Then I added another ground from the engine to the frame. Lastly I ran a ground from the engine straight to my remote ground. You can always double check with a voltmeter or a headlight bulb and see if you can pull 12v from your ground.