Agricultural Type 7-Way Vehicle Socket for Trailers Using Round-Pin 7-Way Plugs

Updated 09/12/2016 | Published 09/09/2016

Products Featured in This Question

Pollak HD, 7-Pole Round Pin Connector w/Cable Guard

(116)

$19.26

Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End

(148)

$12.45

Hook Probe Circuit Tester

(60)

$12.27

Question:

I recently purchased a 2006 IH 4400 grain truck and will be pulling gravity wagons. My gravity wagons already have lights which have the 7 pin ag. connectors. Do you have a 7 pin ag kit or harness for the truck?

asked by: David S

Expert Reply:

7-way trailer connectors can be wired in several ways and heavy-duty commercial/agricultural round-pin 7-way wiring can be different too. Please refer to the linked image to see the different vehicle-side connectors and their common wiring configurations.

To use your trailers that have plugs like # PK11702 with your F-250 you will need to install a socket such as # PK11720. A circuit tester like # PTW2993 will help you identify the function on each wire of the truck's existing 7-way. The Pollak vehicle socket uses screw-in terminals for the wiring to make installation simple.

expert reply by: Adam R