Select Your Vehicle
CartView Cart

Free Shipping on Orders Over $99

Only 14 Hours 2 Minutes Remaining



How to Wire 4-Way Round Pin Trailer Wiring Connector PK11409

Question:

I have a boat trailer with a flat 4 connector. One of the female connectors broke. I want to replace it with a round connector. If I buy a 4 round connector how do I know which wire to put in which hole? thanks.

asked by: Alan


Expert Reply:

There is not an industry standard layout for wiring the 4-Way round pin connector, but there is a layout that is most accepted.

If you you are looking at the front side of the 4-Way round trailer side plug, the top left prong would be used for right hand turn signal and brake function, the top right pin would be the left side turn signal and brake light function, while the bottom left would be used for the tail light function. The last pin, on the bottom right would be used for the ground wire. See the picture to the right for more clarification.

The standard 4-Way wiring colors are white for the ground wire, yellow for left turn signal and brake light functions, brown for tail light function, and green for right hand turn signal and brake functions. These wires would simply be installed in the back side of a 4-Way round connector like part # PK11409.

To wire your vehicle, you would match the wiring layout you created on the trailer by wiring a vehicle end 4-Way round connector like part # PK11410 as a mirror image of the trailer connector.

If you need some additional wire or would just like to replace your current wiring while you are changing out the connector, we offer bonded 4 wire # 16-4B-1 by the foot.




expert reply by: Sarah L




Have a question for the experts? click here.


Products Referenced in This Question

Bonded 4 Wire - per foot


Bonded 4 Wire - per foot

ratingratingratingratingrating
35 reviews

16-4B-1

Price:  $0.57

Product Summary:

Wiring
Accessories
16 Gauge
4 Wire

Product Specs:

Wire
Bonded Wire


more information        




Pollak Heavy-Duty, 4-Pole, Round Pin Socket, Concealed Terminals - Chrome - Vehicle End


Pollak Heavy-Duty, 4-Pole, Round Pin Socket, Concealed Terminals - Chrome - Vehicle End

ratingratingratingratingrating
7 reviews

PK11410

Retail: $13.10

Price:  $8.99

Product Summary:

Trailer Connectors
Vehicle End Connector

Product Specs:

Plug Only
4 Round


more information        





Product Page this Question was Asked From

Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Connector - Chrome - Trailer End


Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Connector - Chrome - Trailer End

ratingratingratingratingrating
17 reviews

PK11409

Retail: $10.77

Price:  $6.49

Product Summary:

Trailer Connectors
Trailer End Connector

Product Specs:

Plug Only
4 Round


more information        







More Answers about Wiring

Featured Help Information

Helpful FAQHelpful FAQ
Helpful FAQ












Stay Connected


Subscribe to email newsletter

Email  

privacy - we don't send unsolicited email





Free Shipping on Orders Over $99

Only 14 Hours 2 Minutes Remaining


etrailer.com reviewsetrailer.com reviews

All images, layout and content copyright etrailer.com