Join Date: May 2019
Feedback Score: 0 reviews
Thanks! After I posted this thread, I figured it out. For the 2019, and maybe similar for other years prior, you will need to add your trailer to the trailer section of your dash menu. In order to get a signal from the 7 pin connector, the engine needs to be running, and vehicle in park. Using the brake controller, apply the brakes and release. You might just need to apply the foot brake also, but not sure. The drivers door needs to be CLOSED. DO NOT leave the door open, and then try to check the signal at the connector. You will not get a positive reading with your test light with the doors open on the truck. It must be a safety feature with Ford to end battery charging when the drivers door is open.
Also, if you have key-less ignition (push button start), leave the key fab IN THE TRUCK. If the horn honks twice when you close the door, its still in your pocket.
If your truck is equipped with the factory installed trailer tow package, then you will not need to add the fuse in the engine compartment. Your truck will have the module installed that eliminates the added fuse.
I use a flush mounted led volt meter on my 5th wheel that I can view from my drivers mirror to monitor voltage to the trailer. (similar to the light on reefer trailers that truckers need). Its attached to a diode that keeps the trailer battery from back-feeding the led when the truck isn't charging the trailer.