Hello. I am trying to connect a 7-pin trailer connector to my 2013 E350. The previous owner added a 4 pin. I bought the OEM brake controller assembly and plugged it in behind the coin holder. I am currently trying to find the correct wires to connect the other three wires, such as the big blue wire for brake controller along with the 12V charging wire for the lights and reverse light wire (I think). But, MORE IMPORTANTLY, it appears that I will need a VIN number from a van of that time who actually came from the factory with the brake controller installed that way Ford Motor Co can program that information in my van based off that VIN coding. Can anyone with a van like that help me out.

PS - be very careful asking any AI to identify wires for a project like this. They sound so confident in their response and are usually wrong or just roll with your assumptions.

Thanks!

 

Trailer wiring diagrams from the Ford Factory Service Manual...