I have the kenwood ddx-7017 and purchased the plug-in GPS unit. there's a couple wires i need to connect and wanted to know a few things...
Ground (Black)
Battery 12v (Red)
Ignition 12v (Yellow)
Parking Brake Sensor (Green)

Ground is easy.

Red/Yellow, can i just tap the same red/yellow on the radio wire harness? I assume it's the same thing as battery and ignition.

Parking brake sensor, can i just ground this wire out? There's a speed sensor wire on the kenwood unit so that it won't play dvds while in motion, but i just grounded that out and now it plays all the time. I figure the parking brake sensor is the same.

Thanks in advance.

PS. where should i mount the antenna? I was going to put it on the rear window but i have 5% tint, will that matter?