How to Wire the Pollak 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End # PK11720

Question

Question:

pictorial diagram of suggested wiring to Pollak 7 pin socket round pin

asked by: Terry Z

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Expert Reply:

On the back of the Pollak 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End, part # PK11720, it is marked alongside the pin with the color of the wire that connects to that pin location.

I am also including a photo that will show a 7-Way round pin connector for the vehicle end with the colors and functions listed for each pin.

I am also including a link to a FAQ page on trailer wiring.

expert reply by: Jeff D

0

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Answer 1

I attached a picture that shows the pin out diagram for the Pollak 5th Wheel / Gooseneck T-Connector with 7-Pole #PK11893-11932 that you referenced.

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Answer 2

There are actually two ways that 7-way wiring colors are commonly seen. One uses a red wire and the other a purple. The circuits they represent do vary though. So check out the updated diagram I attached to this page and most likely you need to wire…

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Answer 3

Yes, the 7-Pin Round connector is wired differently than the 7-Way flat RV connector. I will list the typical heavy duty truck wiring connections inside the plug on the trailer side for you. At the index guide for plugging the trailer end in to the…

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Answer 4

On a 7 pin round which is the common connection on a semi trailer, the clearance/marker lights are at the 10 o clock position when you look at the trailer wiring connection. When looking at the connector on the back of the truck, that will put the…

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Answer 5

Hey Juan! Depending on the jacks you may be able to add a motor like #LC196308 but you have to make sure it is rated for the weight up front (you're probably around 6,000 lbs but could be more). For a complete replacement I recommend the…

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Answer 6

Hey Nate, We do not have a 3/4" spindle nut or washer, the smallest option is the 7/8" spindle nut #165931and a 1" washer #SW1000. I cannot find anything smaller. Are you sure the threads on you're spindle are 3/4"? If they…

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Answer 7

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…

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Answer 8

You are going to have roughly 8-5/8" from the bottom of the frame to where the top of the Curt Trailer Hitch Receiver #14001 exits below the rear bumper. You will need to measure this on your 1997 Ford F-250 DMI bumper as we have never tested…

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Answer 9

Hey Timothy! The brake controller port on the Sprinter is located under the driver seat. The connector picture below will fit into the port and allow you to install a brake controller like the Redarc Tow-Pro Elite #RED52CR. I also linked an…

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Answer 10

I have attached a photo of the Pollak Heavy-Duty, 7-Pole #PK11700 as viewed from the front with all of the correct wiring connections noted. 12:00 - White Wire is Ground. 2:00 - Brown Wire - Tail and Running Lights. 4:00 - Green Wire - Right Brake…

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Answer 11

When connecting a gooseneck trailer to a big rig truck like your Peterbilt, you will need to change the trailer wiring from the commercial style to a RV style connection. Using a kit like the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole…

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How to Wire the Pollak 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End # PK11720

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