Phono/RCA Video Cables

We stock various lengths of RCA Phono cables.  Very often people will use Phono/RCA cameras/cables when attaching a reversing camera to an in-dash aftermarket head unit.  We have our cables built with a spare red wire inside, the reason being is that most phono based monitors/radios require a trigger signal from the reverse light to tell it when you are in reverse so it can display the image and this spare red wire can be used to carry this from the back of the vehicle to the front.