Parts Needed to Install 7-Way in 2006 Chevy Express 3500 Without Tow Package
Updated 01/05/2026 | Published 09/17/2024
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Question:
I have a 2006 Chevy express 3500, no factory tow wiring. I am looking to install a 7 pin connector. Which wiring harness/parts will I need?
asked by: Jay W
Expert Reply:
Hi Jay,
To get your 2006 Chevy Express 3500 set up with a 7-way there's just a couple parts you will need:
- T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 55540
- Universal Installation Kit for Trailer Brake Controller # ETBC7
You will first install the 4-flat, which will activate your trailer's lighting functions, and you'll then plug that into the 7-way that comes with the # ETBC7, which also gives you the wiring, circuit breakers, and rest of the hardware needed for installation.
Product Page this Question was Asked From
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
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Jameson C.
1/5/2026
Hey Jay, how did the wiring setup go on your Chevy Express using the 4-flat and ETBC7 kit? Your update could make it easier for the next person adding a 7-way to their van.