I was suffering from the same problem, I lost all liftgate lights and the lock at the same time losing that much on the liftgate at once told me to check the harness. After spending $104 on mopar.com I got the wiring harness here is the old harness I removed, problem fixed. There was a total of 8 wires broken inside the boot. Before you drop money on new led lights which are $250-300 a piece I urge you to check the harness.