I've got a double din DVD player for my vectra. Taken out the standard stereo. When I connect the stereo wires to the car, it doesn't always turn on, and when it does most of the time it constantly turns on and off.

I've seen posts on here about something to do with cigarette lighter?

Ok, start from scratch.
If I was to put an aftermarket stereo in my vectra, not bothered about the screening controls.. what adaptors wiring kits etc would i need?

I've got the PC2-04-4 harness adaptor (all it is, is swapped over live and ignition wires). Thats all the cables i have besides the stereo one.

Please someone help. It'll all look sweet when I've finished. I'll post pictures when I've done it.