Parts Needed to Add 7-Way to 2005 Ford E350 With 4-Way For Brake Controller

Question

Question:

Hi! I have a 2005 E350 with the factory 4-pin harness. I found the brake controller plug under the dash on the driver side, but the harness under the vehicle is only four pins and terminates in a square connector almost looks like a deutsch connector. What do I need to upgrade from the 4-pin harness to a 7-pin setup? Are there any drop-in replacement options? Where would I plug-in the additional three wires?

asked by: Eric A

0

Expert Reply:

So to upgrade from the factory 4-way on your 2005 Ford E350 to a 7-way, all you need is an adapter and some added 10 gauge wire. At the back of your van, along the inside of the driver's side frame rail, between the bumper and the rear wheel there will be connectors with wires run that are power and brake signal wiring. I have added a link below to a help article which shows this. You would also need to run the proper length of 10 gauge wire from the brake controller to the 7-way, so you'd need the following:

- Adapter 4-Pole to 7-Pole and 4-Pole # 37185

- 10 Gauge Primary Wire - Blue - per Foot # 10-1-1

expert reply by: Kyle S

0

Answer 1

There is no reason you couldn't use the Universal Wiring Kit #ETBC7 that you referenced to install a fully functional 7-Way on your 2005 Ford E-350, but you may not need the entire kit depending on what the van is already equipped with. If the…

view full answer...

Answer 2

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

view full answer...

Answer 3

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

view full answer...

Answer 4

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

view full answer...

Answer 5

Hey Andrew! Yes, Furrion does have a Chill Cube model with a heat pump. This was actually just released for aftermarket sale. You will need a complete system to make the switch, new R32 units aren't backwards compatible with old R410A systems.…

view full answer...

Answer 6

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

view full answer...

Answer 7

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

view full answer...

Answer 8

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

view full answer...

Answer 9

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

view full answer...

Answer 10

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

view full answer...

Answer 11

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

view full answer...

Answer 12

Hey Melanie. The reason you can't find a replacement for your GE ARC15AACBL2 15,000 btu air conditioner is because they phased them out. In 2025 all RV AC systems had to change over to a new coolant called R32. This was a EPA mandated decision.…

view full answer...

Parts Needed to Add 7-Way to 2005 Ford E350 With 4-Way For Brake Controller

Product Page this Question was Asked From

Featured Help Information

Miscellaneous Media

Continue Researching