Recommended 4-Way Wiring Harness for a 2023 Ford Transit T350 Dually

Updated 07/13/2026 | Published 07/11/2026

Products Featured in This Question

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(5)

$92.86

Question:

hi Jerred, ford transit 350HD with a unicellular body. 2023 dual wheel. looking for a trailer harness flat 4 pin. plugs have a 8 pin configuration 4 top/4 bottom have pictures of plug how can I send them to you thanks unable to send a iPhone photo on this post. thanks

asked by: keith d

Expert Reply:

Thanks for the information Keith! The Curt T-Connector Vehicle Wiring Harness item # C42MJ is going to be the correct one for your 2023 Ford Transit T350. This harness is specifically designed for the dually models. It connects behind your rear tail lights and provides a 4-way flat connector.

We do not have any wiring harnesses that fit a 8 pin configuration 4 top/4 bottom like you described. That may be an OEM part that Ford offers if your Transit is prepped with a towing package.

I attached a picture below so you can see what the connectors on the Curt item # C42MJ look like.

What kind of trailer are you pulling?

You can add this information, along with any other questions you have, where it says Add Comment.

expert reply by: Jerred H