What would be the best way to bypass the E-Brake on a Jensen VM92

If you have the old firmware then all you need to do is ground the parking brake wire
OR
if you have the new firmware(just bought the system) a toggle switch is involved:
1 - connect e-brake wire from dvd unit to the switch
2 - connect a ground wire from switch to the unit chassis(any good metal grounding surface will do)
3 - pop in a dvd, toggle the switch back and forth 2 or 3 times depending on what wire you placed where...and voilaa!! your dvd system should work in motion!!