Got a headunit for truck but an having trouble bypassing the video lockout, i thougt it was a simple grounding of the brake wire, but that didnt work. It's a pioneer model avh=p6000dvd does anyone have any ideas on how to bypass this unit?

 

idk, i helped put in a similar screen. and we grounded the parking brake and then put a toggle switch on that wire and flipped it on and off until the lock went off.
It work for us! might want to give it a try...

 

yea u need to install a switch