How to Make Third Brake Light Adapter for Cargo Carrier
Published 10/17/2018 >
Products Featured in This Question
Question:
Hello.... I have a 2008 Saturn Outlook, XR, AWD with the factory towing package installed. It has a 7 pin connector installed. We have a hitch mounted cargo rack and my wife wants me to add a LED brake light to it. I currently have a 7 pin to 4 pin adaptor on hand. How do I go about adding one and using the 7 pin to 4 pin adaptor? Thanks..
asked by: Jeffrey D
Helpful Expert Reply:
Since your trailer wiring will have the stop and turn signal circuits combined onto one wire you'll need a converter to isolate out the stop circuit for adding an additional brake light. For that you'd want the part # 118158 wired to your trailer wiring and the red wire would carry the circuit needed for the third brake light. You can make a wiring kit for your cargo carrier using a 4-way connector like the part # HM48133 wired to the # 118158 and mounted to your carrier and you'd have wiring for your carrier setup.
Product Page this Question was Asked From
Optronics Streamline LED Trailer Tail Light - Submersible - 3 Function - 11 Diodes - Red Lens
- Trailer Lights
- Tail Lights
- Stop
- Tail
- Turn
- Oval
- Surface Mount
- Submersible Lights
- LED Light
- 17L x 1-1/2W Inch
- Red
- Optronics
more information >
Continue Researching
- Q&A: Best Lug Nuts for 2021 Keystone Cougar 29RKS
- Article: Trailer Lighting Requirements
- Article: Trailer Wiring Diagrams
- Q&A: Availability of Heat Strip or Heat Pump for Furrion Chill Cube RV AC
- Q&A: Parts Needed to Install Curt RVi Series Shadow 2 Flat Tow Brake System on 2025 Ford Maverick Hybrid
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Q&A: Replacement Caliper Solution for Tie Down Engineering 46304
- Q&A: LED Light Kit Recommendation For Swagman Current Bike Rack
- Q&A: Which Curt Hitch Fits 2025 Hyundai Tucson Hybrid
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Breakaway Kit Installation for Single and Dual Brake Axle Trailers
- Article: How to Choose the Right Trailer Hitch Class
- Article: Brake Controller Installation: Starting from Scratch
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)

