I did some searching but didn't find anything about adding Rear parking sensors. Does anyone know what it would take to add it? I have AlfaOBD, just need to know the list of hard parts. Does anyone know if the harness plug is on the tradesman trucks that didn't come with it? I'd look for it on mine, but she's waiting on the doctor to have her butt dimple fixed.
For the wiring: You’ll definitely need the correct rear facia harness that contains the connectors for the sensors. The rear facia harness contains the following, so you’ll choose the one optioned according to what you already have: park sensors, license plate lamps, passive entry antenna, TTPMS module.
There are two connectors you need to look at, and depending on how they are populated on both halves of the connectors will reveal how much of the wiring is present, or how much needs to be populated.
You’ll look at both halves of the XY960 connector for the following wires-
Here’s the location of that connector-
And look at both halves of XY402 connector (light gray) for the following wires-
Here’s the location (notice the BCM for reference)-
For the parts: You’ll need the module- 68366716AF (rear only) and the lower switch bank with the button for it (too many part numbers based on switch configurations).
4 sensors- 6MK25TZZAA
4 sensor decoupler rings- 68271824AA
Bumper valance right side- 68451148AA
Bumper valance left side- 68451149AA