[Shanef94]

Hi am new to the site so hello,
I'm installing a rear parking camera, all was fine and I wired into a green and yellow wire under the steering wheel to the left(assuming this was ciggy lighter power wire)
All was working fine on setup but then found a I started the engine the screen blanked and received no signal then black completely, could this be interference with the wireless transmitters or due to the power wore I've tapped in to??

Can anyone give me a suggestion and even better tell me if the green and yellow wire I'm talking about is in fact a permanent 12v supply or this could be the cause

All works fine until I start the car

Thanks