please help me

[davie671]

please can some1 help me,
i have brought a 7" flip out screen (is not moterrized) and there are 4 wires and 2 in slots i have a vauxhall corsa ( p reg)
and i can not wire this screen up
it has 4 wires
a yellow wire which goes to the positive on the battery
a black wire which goes to negitive on the battery
a blue wire which goes to the back up light
and a red wire which goes to the ACC
i do not understand the blue and red wire i do not no what the ACC is so i do not no were to connet the red wire, and i do not no what the back up light is so i can not connet the blue wire
please can some1 help me asap
add me on msn my addy is [email protected]
many thanks
Mike

[kcg795]

ACC goes to a circuit that's only hot when the key is turned to the ACC position. There's always one by the stereo. Get yourself a voltage tester and figure out which wire comes alive when you turn the key. If you find it, that's the one you wanna connect to.

[PaulD]

some asked this before, the backup is for hooking up a backup camera