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RVing message boards => Towing and towables => Topic started by: johnmorford on September 11, 2017, 04:26:19 PM

Title: Trailer brake controller in used motorhome
Post by: johnmorford on September 11, 2017, 04:26:19 PM
I bought a Class C Motorhome that is on a 2016 Ford 350 chassis. This is a picture of part of a brake controller that was already in it. Does anyone have a clue what controller might fit that?

Title: Re: Trailer brake controller in used motorhome
Post by: HueyPilotVN on September 11, 2017, 04:38:53 PM
It looks like the diagnostic port.
Title: Re: Trailer brake controller in used motorhome
Post by: Lou Schneider on September 11, 2017, 09:04:09 PM
Welcome to The RV Forum, John!

Bill's right, that's the OBD2 diagnostic port and has nothing to do with a brake controller.  You're looking for a grey 4 pin connector to attach an adapter cable for an external brake controller.

I'd take the motorhome down to a Ford dealer and let them look at it.  Ford has a superior built-in brake controller as part of their optional trailer towing package.  If you have it you'll have a small control panel on the dashboard. 

You can buy the panel on Ebay, but I don't know if it will work on a vehicle without the Towing Package.   That's where the dealer comes in, he can tell you if it will work or not.
Title: Re: Trailer brake controller in used motorhome
Post by: Frozn in Minnesota on September 15, 2017, 08:47:22 PM
On my 2010 ford E450 the brake plug for the bike controller was behind the center dash. Had to relay dig for it. Way up on top behind the three switches.