I know i have to ground it or sumthin like that, but i dunno where to find the wire, i dunno how to ground it or what to do! Help!

 

the parking brake wire is usually lt. green coming off the unit, tap that onto the ground wire off the unit usually black. but it also depends on the unit, i know the new pioneers and alpines need toggle switches to get the unit working while driving.

 

... You could watch the road whilst driving, rather than movies... lol

 

just dont ground it to the ebrake find another good ground in the car and watch it going down the road

 

the wire that is supposed to go to the ebrake should be hooked to a switch ground, not to ground directly if not you will have problems this way the unit will think you are actually using ebrake. I do this ALL the time so believe me on this one