Have a '06 TB Ext that has a weird problem. The rear wiper will do a phantom sweep engine off key out of the ignition. At first motor stopped, replaced it. Work for a day or two then stopped and the phantom sweeps started. Replaced the the LGM and programmed, wiper worked of several days then stopped again. I have checked the wiring and ground. As I am tugging on the liftgate harness I hear the lock actuator unlock but I can't find a break in the wiring. There are 2 blk ground wires I believe that go into a weird splice and one heavier wire turns into to 2 smaller gauge. At least I think it is a splice, I might be wrong as I have never seen one like this before. At one point the rear defrost wouldn't time out but that resolved with the new LGM Any help would be greatly appreciated. It is hell when you can't see out the back glass in the rain.