Hopkins Wiring - Trailer Connectors - HMC20031 Review Video

The wire that runs from the vehicle's battery to the 7-way trailer connector and then from the 7-way trailer connector to the trailer battery should be at least a 10 gauge. If you don't have any 10 gauge wire you can purchase part…

There isn't a plug and play option for a 7-way available, but we have the parts you'd need to complete the installation. You'll need to begin by installing a 4-pole trailer connector. There are two iterations of a 4-pole…

Your utility trailer has a wishbone wiring harness therefore, in order to replace the connector you will need the Quick Fix (TM) 4 Pole Flat Trailer End part #HMC20031. There is an extra running light wire on the wishbone harness that runs down…

I do have a couple options for you, but there isn't an adapter to go from a male (trailer end) 4-pole round to a female (vehicle) 4-pole flat or even a 7-way. So, you could either make your own adapter using part #PK11410 and #HM38138, if you…

A 4-way trailer connector will have four functions which means it will also have four wires for the exception of wishbone harnesses. These four functions are ground, tail light, right turn, and left turn. The ground function will usually be…

The distance between the mounting holes for the Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket #PK11720 is 3" on center. I have attached a photo to demonstrate this as well as a review video where this measurement is shown. We also…

It sounds like what you currently have on your trailer is what's known as a wishbone wiring harness. The running light circuit has two wires, one for the drivers side of the trailer, the other for the passenger side. A wishbone harness can make…

Your 4-pin/5-wire wiring harness is what is called a "wishbone" type which simply means that there are two separate running light wires, one brown and one pink. This allows a separate running light wire for each side of the trailer which…

It really just depends on what the wires are for. Most likely you have several ground wires among the 8 as well as a couple running light circuits in there as well. You just have to run all of the wires to the correct circuits. The 4-way wiring of…

We do have 4-way to 4-way extensions in a few sizes. Like with the part #HM47114 for 48 inches, part #HM47004 for 24 inches or part #HM48144 for 12 inches. We also have 6 foot part #RM-300150-00.

That looks like a standard type of connector that vehicle manufacturers will use for various connections. I couldn't give you a part number for it though. Easiest option would probably be to cut that off and then use the 4-way extension part…

The 12V wire at the vehicle-end trailer connector being hot even when the truck is off can vary depending on the application. For all aftermarket hardwiring installations of a 7-Way wiring harness, the 12V wire will be hot at all times, even when the…