Originally Posted by JMLoughrey
on the jvc units, if you take the lt green wire off the back of the radio and put that to the ground wire of the radio it will over ride the parking brake circuit.
I will give you a note of warning though, i'm not familiar with the laws in CA, on the east coast in CT ive had several customers come in with tickets from state cops to have it changed and a $500 fine is assested. Its against the law to have video in view of the driver while the vehicle is in motion.
Thanks for this info...and for the warning. The behavior of this particular head unit is pretty unpredictable. For instance, when using the "Apps" option on the radio, I can play Netflix from my phone on the screen w/o the parking brake engaged. This is the same thing I use to display GPS from the phone to the head unit, which is probably why this works.
When using the "iPod" option on the head unit, there are three ways to interface with the iDevice. With one, it yields control of the iPod/iPhone to the head unit, with the next, it uses the head unit's standard display, but everything is controlled through the iDevice, and with the third, it is basically the iDevice TV Out for the Music player, which requires the parking brake to be engaged to use. Funny enough, when my phone is running a GPS app and I choose the "iPod" option on the head unit, it will output the GPS video ONLY if I engage the parking brake. Basically, "iPod" mode requires parking brake (in some cases), "Apps" does not.
Anyway, I don't actually care about playing video on the head unit (which is partially enabled as it is), I just want the behavior of the unit to be predictable and make sense. I'm getting used to how it is working, though, so I'm probably not going to fuss with it anyway. Maybe when I get around to installing a steering wheel control module...