Originally Posted by jackra_1

Dont forget the following from Rayalbars "The NavTool wants 12V applied to an orange wire from the backup lights to cause the switch from Navigation screen to backup camera screen. As has been pointed out before in this Forum, Jaguar wires its backup lights backwards from most cars. Instead of grounding one side of the lights and applying switched 12V to the other side, they apply 12V at all times to the lights, and then ground a wire when reverse gear is selected. So if you connect the backup light wire to the orange wire, you get an interesting result: 12V flowing thru the lamps appears on the orange wire and activates the NavTool switch - so the backup camera is on at all times, except when in reverse! Other posters have used a relay to apply 12 to the orange wire".

I used the relay in one of my pics.

Unplug that connector you show and test the connections to find out what is what.

Originally Posted by Suprane1

When installing the backup camera, I found that the reverse lights are hot all the time. It actually has power on both terminals all the time (park, neutral, drive), and when the car is shifted into reverse, one of the hot wires (orange/green at the connector below the assembly) changes to ground to turn it on. I figured out that a relay would correct the problem.

Below, is the relay I used that I got from O'Riellys auto parts for less than 5 bucks.

There are four terminals on the relay marked 30(meaning max 30amps that gets switched on), 85 for ground, 86 for power, and 87 that goes to camera (and the radio). So I hooked it up like this...

From the connector I spliced into a wire that was hot all the time when the key was on, the first one which is brown/green and wired it to 30 (for power to the camera)and 86 (to power the relay). I then spliced into the Orange/green wire and wired it to 85 (this wire is normally hot, until shifting into reverse). Then the last wire, 87 to camera. It wont hurt the relay to have power going to both sides of the coil normally because it cant energize it, so it wont be able to make a circuit, and it wont get hot.

30 to brown/green wire
86 to brown/green wire
85 to orange/green
87 to camera and radio