What is the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter # 20036 Used For
Updated 06/03/2020 | Published 03/12/2018
Products Featured in This Question
Question:
What is the wire for? I know it hooks to reverse lights but what is the purpose of the wire?
asked by: Wesley
Expert Reply:
Typically the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter # 20036 is used to activate a Solenoid Valve like part # T4748800 on a surge brake actuator.
Surge actuators activate the brakes on a trailer when the weight of the trailer is still moving forward while the coupler is slowing down. That compression is what causes the master cylinder to activate your trailer brakes.
If you back up with a trailer that is using a surge brake actuator you will be causing that compression to take place since the trailer will need to be pushed. This will activate your trailer brakes to activate and make it very difficult to back your trailer up. Some surge brake actuators have solenoid valve like what I mentioned above which lets the surge actuator know that you are backing up and not coming to a stop. It then "locks out" the actuator so that it does not cause the trailer brakes to activate.
Product Page this Question was Asked From
Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter
- Custom Fit Vehicle Wiring
- Wiring Adapters
- Universal Fit
- 4 Flat to 5 Flat
- Plug and Lead
- Tow Ready
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter
- Q&A: How to Add 5-Way Wiring Connector to a 2024 Toyota Grand Highlander With Factory 4-Way Connector
- Article: Wiring Trailer Lights with a 5-Way Plug (It's Easier Than You Think)
- Article: Trailer Wiring Diagrams
- Q&A: Can a 4-Way Trailer Connector be Plugged Into a 5-Way Vehicle End Trailer Connector
- Q&A: Will the Hollywood Racks Crosstrack Bike Rack for 1 Bike Work with Fenders?
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Q&A: Wiring New 4-Way Connector on Trailer with 5 Wires
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Q&A: New Brake Assemblies, Hub/Drums, Brake Lines, and Bearing Buddy for Trailer with 3,500 lb Axle
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Surge Brake Actuating Coupler With Reverse Lockout Boat Launching
- Article: Brake Controller Installation: Starting from Scratch
- Article: How to Bleed Your Trailer Surge Brakes
- Article: How to Measure for Trailer Hitch Drop
Peter
5/31/2020
I have a short haul, on fairly flat road. I have a five prong trailer with brake assistance. What are the risks if I don’t install the 4 to 5 adaptor?