Originally Posted by JerryS
The DVD system still works if you have that wire connected to the parking brake, you just don't get video is all. You still get sound from your DVD music videos. The GPS, however, is a real nag and won't let you edit or add more POI while you are driving if that wire is connect to the parking park as suggested. At least that's how this new GPS works. My portable GPS has a nag, but at least it's just a warning. That's why I have a manual switch on it. Only the front passenger can access it so, hopefully that's legal.
the parking brake is just a ground. Yes you could hear it but, you wont see it.
Thats why you should connect it to any ground so it will trick the radio into thinking the e-brake is up.
That whole fine thing is b.s to me.
I've been pulled over many many times with my screen open and viewing the FM radio and they never questioned me on it.