I am installing a back up camera in my 2010 TL (no nav). The camera get's power from the back up light (which turns the camera on only when in reverse) and wirelessly transmits the picture to a dedicated screen in the front.

I pulled the panel off the back to expose the tail light, but wasn't sure which wire to tap into. Before even removing the whole light, there are a bunch of wires (in a black plastic sleeve) that go into the light housing. I figure it'd be much easier to tap into the wire there than remove the whole light and then find the wire.

Does anyone know which of those wires would be the correct on?

Thanks

 

I dont even know shit about electronics, but I do know you can find out with a multimeter...
ground = resistance in ohms.
power = volts


go ahead and get you a cheap multimeter, so that you can find out. because waiting or depending on someone is for the birds...you'll likely wait forever, cuz that loom isnt well studied.

 

There are about 8 wires in that group. Any way to test them without having to strip each of them to expose the wire to test?

 

look at the terminated end that plugs into the light socket and determine wire color.

Then go to the loom and find same color.