I have 2011 JKU.
I bought 2din gps navigation with built in canbus.
it has 3 wires for canbus for steering control:
black for ground
steering wheel 1 wire
steering wheel 2 wire
I have install this and everything works except controlling the steering wheel function because I dont know where to connect those 3 wires.
the stereo came with matching harness.
I have looked for the car harness diagram to find those canbus wires but cannot find any.