I'm hooking up plow light and need to know what color wire for turn and park lights.Left and right.

 

Ford uses FET transistors to control turn signals and other functions in the Body Control Module (BCM). The BCM is a non-repairable item. If you blow an FET, you will have to replace the BCM and program the new one. You will be ok picking up the park lamps from the yellow with green stripe at the front park lights. I believe I would try to locate the rear turn signal wires as they leave the Battery Junction Box under the hood to go to the rear of the truck. The BCM controls a relay circuit that allows high amperage load then the BCM FET front turn signals controlling the front turn signals.

 

Thanks for the info.