Power Take-Off: Operation
WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
For ATX vehicles: The PTO switch is wired to the PCM. The PCM sends a BUS message to the TCM and the TCM controls the PTO Relay.
For MTX vehicles: The PTO switch is wired to the PCM. The PCM controls the PTO Relay.
Please refer to the RAM BODY BUILDERS guide on the manufacturers website for further detail.