Putting Two and Two together, if it is the CCD camera for reversing why not wire it in parallel to the reversing light!
Does it need to powered all of the time? If it does then you have to accept that if the car is left for a long period, say at an airport the battery may go flat, eg: like any system with a car alarm.
Depending on how complex you wanted to get you could have a small 12V battery in the rear that is kept charged while the car is running and then used to power the kit. So if it's battery goes flat it won't harm the car. |