If you want to by-pass the parking brake wire, here's how.
Most wiring harnesses have a solid orage wire for illumination of the radio and also have an orange wire with a white stripe for dimming purposes. Most radios do not use this dimming feature. Connect the brake wire to this wire and your able to watch your movies whenever you want. All the wire is looking for is a signal. It cannot differentiate between a parking brake signal and a non-parking brake signal.
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