Okay, so I just received my Z2 yesterday and am preparing to install it. I added the wire to the open position on connector #2. My question is this -- I really don't care to watch movies on this thing while driving, but I don't want to have to stop in order to make navigation changes. Do I need to ground both wires to be able to use the nav while moving, or just wire #2? In other words, is grounding the brake wire only necessary to watch DVDs while moving while the other wire is only needed to enable navigation while moving?
do the 2 wire bypass...it enables you to function the nav settings and to watch movies...if you dont care about watching movies then dont, but it still comes along with the bypass.