Why Do Trailer Wiring Harnesses for 2020 Toyota Tacoma Require Power Wire to Battery
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Hi, Since I need to run a wire to the battery anyway .... would it make sense to use the next higher pin trailer cable to allow 12v to be accessible at the rear of the vehicle/+ Trailer ??? I could then use an adapter to put the plug back to flat wire when needed. If So, What higher pin wiring harness would you recommend ??? Thanks !!!
asked by: SteveO
Helpful Expert Reply:
The available trailer wiring harness for your 2020 Toyota Tacoma, is the Curt T-Connector # C56349 you were looking at (which would also be my recommendation), do require that a hot lead be ran up to the battery for power. As you mentioned in your question, there are many vehicles that don't require this connection but there are just as many (if not more) that do.
While I can't say for certain what the particular difference is between your previous model vehicles and your new 2020 Toyota Tacoma with regards to the wiring, I can say that typically when a hot lead is required it's because the factory tail light circuits just don't provide enough power on their own to reliably take on the responsibility of the trailer lights as well. Connecting directly to the tail light circuits for power, instead of running the 12V wire to the battery, could result in blown fuses or more significant damage on the truck.
I have attached an installation video below on the 2017 Tacoma that you can follow along with. The process should be almost identical on your 2020 model.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Powered Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- Visible
- CURT
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Steveo
2/3/2020
Hi, Since I need to run a wire to the battery anyway .... would it make sense to use the next higher pin trailer cable to allow 12v to be accessible at the rear of the vehicle/+ Trailer ??? I could then use an adapter to put the plug back to flat wire when needed. If So, What higher pin wiring harness would you recommend ??? Thanks !!!