Can a 4-Way Trailer Connector be Plugged Into a 5-Way Vehicle End Trailer Connector
Updated 01/21/2020 | Published 06/01/2012 >
Question:
I have recently purchased a boat trailer that requires a 5 pole connector. My 2010 F150 has a four pole connector which I use to pull another trailer. If I install a 20036 adapter will I still be able to plug the 4 pole connector into the 5 pole adapter? If not, what do you suggest? ie. I need to be able to use both trailers.
asked by: Ron
Expert Reply:
You will still be able to use the trailer with the 4-Way after installing the 4 to 5-Way adapter, # 20036. First, you could just remove the adapter if you wanted to and then plug in the 4-Way like normal while stowing the adapter in the truck. The extra wire in the adapter what just not be used.
Or, you could plug the 4-Way into the 5-Way end of the adapter. The extra pin on the end is for the extra function on the 5-Way, otherwise, the functions are the same for all the other pins. This means that it will function just fine being plugged into the 5-Way.
I have included a link to a video showing a typical installation of this adapter for you.

Ronnie L.
1/20/2020
There are no brakes on the trailer

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Ronnie L.
1/19/2020
I recently bought a trailer with a 5 prong and my motorcycle is a 4 prong can they be plugged together