
customer service | view cart

Custom Fit Vehicle Wiring
This Product Fits The Following Vehicles
1996 - 2009 Chevrolet Express Van with 7-wire Tow Package
1996 - 2009 GMC Savana Van with 7-Wire Tow Package
2000 - 2005 Ford Excursion with factory 4-Flat
1997 - 2008 Ford Expedition with factory 4-Flat
1994 - 2009 Ford F-150 with factory 4-Flat
1994 - 1996 Ford F-250 and F-350 with factory 4-Flat
1997 - 1998 Ford F-250 and F-350 Heavy Duty with factory 4-Flat
2002 - 2009 Ford F-250 and F-350 Super Duty with factory 4-Flat
2005 - 2009 Ford F-350, 450, and 550 Cab and Chassis with factory 4-Flat
2006 - 2008 Lincoln Mark LT with factory 4-Flat
1998 - 2008 Lincoln Navigator with factory 4-Flat
1995 - 2009 Dodge Ram Pickup with factory 4-Flat
1992 - 2009 Ford Van with factory 4-Flat
1994 - 1996 Ford F-150 without factory trailer connector
1997 - 2003 Ford F-150 and F-250 Light Duty without factory trailer connector
2004 - 2004 Ford F-150 Heritage Series without factory trailer connector
Today, we are going to show you part number 37185 which is an adapter goes from a 4 pole up to a 7 pole and additional 4 pole on the side. What we have here is a Dodge 4X4 Durango. It does not matter what vehicle you are working with as long as you start off with a basic 4 pole flat that is already installed, then you can upgrade from there. A multi-tow adapter does come with its own bracket to mount up with if you do not have an existing bracket, as in our application here, the hitch itself does supply the bracket. For comparison sake, this is the one that comes with the part number, 37189, but we are not going to use this today. We are going to use the factory bracket. I will show you how it mounts up we will mock it up there, and show you what is going on. That will essentially be are finished product when we are done.
To begin our install we have to actually enlarge the holes that fit the screws that come with the multi-tow adapter, basically a 1/4 inch drill bit size, so you have plenty of room to work with. In some instances, you have a bracket that is a little bit too small for our adapter, we have to grind down the little edge, just grind down the one side enough room for it too sink in now we can have it sit flush against the bracket and the screws will be long enough too. Right now we will permanently mount our adapter. What we will do next is get our 4 pole put together we will put some dielectric grease to protect them and zip tie them so that they do not come apart. Next, we will install the ground wire, using a number 10 screw and we will run it right up into the frame next to the spare tire. Next, we will run our purple wire up to the other side slightly behind the taillight. We will go ahead and uninstall our taillight, to get to our wiring harness.
Next we will take out the wiring harness and a taillight so it will be out of the way. With that out of the way, we will test for the reverse light lead. Since this vehicle already has a T-one connector already installed, we are going to use it to trace, on our first try we hit the right one, instead of splicing into the factory harness, we will know it is this wire here that is carrying the reverse light circuit, so we will splice into that without having to worry about breaking into the wiring on the vehicle. With the wire fish through, we will go ahead and disconnect our butt connector we have on here and use a regular splice connector. We will run some dielectric grease in the splice connector, to be on the safe side, the stuff on the outside will be pushed in, which should give a nice safe connection. Next we will test our connection, to make sure we made a good connection. We are good to go, we have power. Now it is the simple task of making the wires nice and neat and put the light back together. For the last step, we will take these wires and zip tie them to the existing harness and they will be place out of the way and you will not have to worry about it. And we are finished. There you have it for adapter part number 37185 from Hoppy.
Questions About Wiring Harness Adapter Installation - 2001 Dodge Durango
Location of Brake Controller Installation Port on 1999 Dodge Durango
Questions About Part 37185
Installation Instructions for 4 Pole to 7 and 4 Pole Adapter part # 37185
Installation of 7-Way and 4-way Connector on 2008 Dodge Ram Pickup with factory 4-way Connector
Instructions Needed for Wiring a 4-Way to 7-Way Trailer Connector on a 2008 Dodge Durango
Charging a Trailer Battery While Towing
Brake Controller Wiring on a 2005 Ford F-150 without a Tow Package
4 Pole to 7 Pole & 4 Pole Wiring Adapter
Brake Controller Wiring on a 2000 Chevy Silverado