My car is a 2.0, with no backup camera. I'm thinking up things to display on the JVC NXD505 in-dash unit, via the unused video input. What is the easiest way to get access to the cable? I presume it's buried behind the unit, probably tie-wrapped in a bundle of other cables. Is there an easy way (preferably not requiring one to sit head-down in the passenger seat) to get to it? I'm guessing the cables that are accessible behind the headlight switch panel don't include this one, but that's the idea. Thanks, Greg.