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Parts Needed to Add Trailer Wiring to 2023 Toyota Tundra SR  

Updated 03/02/2026 | Published 02/21/2026

Question:

I know I need C44BR HITCH receiver for my 2023 toyota tundra SR that came without the towing package but what wiring do i need for the trailer break lights

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Expert Reply:

Hey Ron, since your 2023 Toyota Tundra doesn't have the tow package currently you would need the 4-way kit part # C85FV for the taillight functions of the trailer wiring. Then if you needed to convert to a 7-way you'd also need the part # 37185. Does the trailer have brakes?

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Jameson C
Ron V. profile picture

Ron V.

2/27/2026

The truck does have wiring currently just not the hitch receiver. The wiring is just plugged up to dummy plug

Jameson C. profile picture
Etrailer Expert

Jameson C.

3/2/2026

@RonV If it's a round connector you could use the Curt 7-Way part # C36GJ for a 4-way/7-way combo that would plug right into that.

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