Parts Needed To Add 7-way Connector and Trailer Brake Controller On 2021 Toyota Sienna
Question:
What tow wiring harness do you recommend for a 7-wire round setup for a trailer with electric brakes.
asked by: H D
Expert Reply:
To add a 7-way connector to your 2021 Toyota Sienna you will first need to add a 4-way connector of which I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # TK69FR as it is a plug and play installation with not splicing.
With the 4-way connector installed there are two options for a 7-way connector. The # ETBC7 with a traditional controller like the Tekonsha Prodigy P3 # 90195, or the option I recommend is the # ETBC7L with the Curt Echo Wireless # C51180.
The reason for this is the # C51180 plugs into the 7-way connector meaning you will not need to run wiring into the passenger compartment of your vehicle, and will not have to drill any holes in the dash to mount a controller.
To install the # ETBC7L you will plug it into your new 4-way connector and make the following connections:
White wire grounded to frame of vehicle
Black wire to positive terminal of battery with included 40 amp circuit breaker.
I also recommend the no drill mounting bracket # 18140 to secure the 7-way connector to your trailer hitch receiver.
I included videos of the products mentioned for you to take a look at.
Products Referenced in This Question
No-Drill Mount for Electrical Mounting Bracket - Short
- Accessories and Parts
- Trailer Wiring
- Mounting Hardware
- Brackets
- 4 Flat
- 5 Flat
- 4 Round
- 5 Round
- Tow Ready
more information >
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LCD Display
- Up to 360 Degrees
- Tekonsha
more information >
Curt Echo Wireless Brake Controller - 7-Way Plug Mount w/ Bluetooth App - 1 to 2 Axle - Proportional
- Trailer Brake Controller
- Proportional Controller
- Hidden
- Up to 2 Axles
- Smartphone Display
- CURT
more information >
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
more information >
7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Product Page this Question was Asked From
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 4 Flat
- Tekonsha
more information >
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