Trailer Wiring Diagram for a 7-Way Trailer Side Connector

Question

Question:

Do you have a wiring diagram specific to this 7-Pin Plug? I need to know what color on this specific model goes to what function on my trailer. Thanks for the help.

asked by: CB S

0

Expert Reply:

The problem that you are going to run into no matter what 7-Way you want to put on your trailer is that the color of the wires used is not standardized. Trailer manufacturers or people who rewire their trailers at any point can use any color they have laying around.

You have to go by function, and then follow our wiring FAQ diagrams which I have linked for you. The colors that we mention are the most used but are by no means definitive. If your old 7-Way is still attached you can just match up the wire locations on it to the new 7-Way. Otherwise, you have to follow the wiring back for each wire and then attach it to the 7-Way according to the diagrams.

expert reply by: Michael H

0

click to enlarge

Answer 1

I recommend the Redarc Tow-Pro Elite Brake Controller #RED44FR for your 2022 Ram 2500. This will connect with the Plug and Play Wiring Harness #331-TPH-020 to the under dash connector. I prefer this controller over the Curt Echo #C27JR with the…

view full answer...

Answer 2

Something like the Camco Vertical 2-Stage Propane Regulator #CAM59313, rated for 160,000 Btu/Hr, would have enough "umph" to get you what you need, but you also have to check the rest of your propane lines and connections to make sure they…

view full answer...

Answer 3

To tow your trailer that uses an RV style 7-way blade style connector with your semi that has a 7-pin connector, you need to construct an adapter that will also combine the brake signal into the right and left directional signal pins. This can be…

view full answer...

Answer 4

To find the size of your tire, the easiest way is to just measure the distance from the ground to the top of the tire. I have attached a couple help articles that explain tire sizing. The first 3 numbers are the Section Width. For example, if the…

view full answer...

Answer 5

I attached a diagram showing how a breakaway switch, like part #420000, would be wired to a trailer mounted battery like the one on your Loudo dump trailer. With this type of setup you would not want to pull the breakaway switch with the trailer…

view full answer...

Answer 6

7-Way connectors like the #A7WCB that you referenced should be wired by function and not color. Since trailer manufacturers can sometimes use non-standard color wires for the taillight functions of their trailer it is best just to determine the…

view full answer...

Answer 7

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

view full answer...

Answer 8

Reese Elite Made their puck system to match the the OEM version, you can use Replacement Puck Plug Covers for Elite and Signature Series Fifth Wheel Rails part #58199 to cover the holes. You will need Rubber Hole Cover for Reese Elite Series…

view full answer...

Answer 9

Lance does have a proprietary plug, but many customers see a standard 6-way or 7-way round and notice it doesn't fit their factory 7-way as well. I've attached an article to help if you have one of the 7-way or 6-way round connectors which we…

view full answer...

Answer 10

We offer a trailer-side 7-way blade connector that can be attached to the 5 wires on your trailer, part #A7WCB from Optronics. The linked video illustrates how this part installs. Since your trailer has only 5 wires some of these pins will not be…

view full answer...

Answer 11

I am almost certain that the issue is that the connector on your 2015 Chevy Silverado 2500 and the one on the trailer are pinned out differently. I have included a picture that shows how a vehicle and trailer side 7-Way are wired (ignore the colors…

view full answer...

Answer 12

As your 7-Way pin connector uses separate turn signals and brake light wiring you will need the to create a custom harness to be able to have everything function properly including the electric brakes. First you will start with the Pollak Heavy-Duty,…

view full answer...

Trailer Wiring Diagram for a 7-Way Trailer Side Connector

Product Page this Question was Asked From

Featured Help Information

Miscellaneous Media

Continue Researching