Parts Needed To Add 7-Way To 2003 Nissan Frontier Kingcab 4 Cylinder
Updated 09/26/2025 | Published 04/30/2025
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Question:
Greetings, I have a 2003 Nissan Frontier Kingcab 4 cylinder, but it did not come with a trailer towing wiring harness installed. Im planning to tow a small 13 camper, which wiring harness should I purchase? Thank you in advance!
asked by: Will R
Expert Reply:
Hello Will, thanks for reaching out. We do have the wiring you need for your 2003 Nissan Frontier Kingcab.
If all you need for your camper is a 4-flat connector, you can use the Curt T-Connector # C56FR.
If your camper has brakes and you need to upgrade that to a 7-way, use the T-Connector, along with the Universal Installation Kit # ETBC7. The two kits combined contain everything needed to add a 4-flat and 7-way to your Frontier, including all of the necessary wires for a brake controller.
For a brake controller, the Tekonsha P3 # 90195 is what I recommend.
Take a look at the video and diagram I linked below. Let me know if there is anything else I can do to help.
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Jesse M.
9/26/2025
Hey Will, did the T-Connector wiring harness work out for your camper setup? I'm curious to know if it met your needs, as it could help others looking to tow with a similar setup.