Parts Needed to Add 7-Way and Brake Controller to 2012 Toyota Tacoma

Updated 09/01/2026 | Published 08/24/2026

Products Featured in This Question

Redarc Tow-Pro Liberty Brake Controller w/ Universal Wiring Harness - Dash Knob - Proportional

(3299)

$167.00

Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob

(793)

$13.00

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(431)

$56.62

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires

(3568)

$118.76

Question:

Hi I want to get ETBC7 and RED52VR and DIY install into 2012 Tacoma w/o a tow package. I want to have auxilary power to my trailer. Do these two kits contain everything I need? Do I need additional wires for auxilary or to go from brake controller to battery?

asked by: Owen C

Expert Reply:

Hey Owen! Do you already have a 4-way on your Tacoma? If you don't, you will also need the Curt T-Connector Vehicle Wiring Harness # C55513. Then you will upgrade to a 7-way using the # ETBC7 which will allow you to install the Redarc Tow-Pro Liberty # RED52VR.

The # ETBC7 includes wiring for the brake controller and the 12V power on the 7-way. This version of the Liberty comes with the universal wiring harness, so unless you want the mounting panel # 331-TPSI-002 for your Tacoma that is everything to complete your setup.

What kind of trailer are you towing?

expert reply by: Robin H

Redarc Mounting Panel
(click to enlarge)

Tim

9/1/2026

The harness has an aux electric wire. This is used to charge the breakaway battery or anything else you might wish power for. Robin replied to you question with the harness you will need, my experience has always been positive with the help from etrailer! Tim

Robin H.

9/1/2026

@Tim thanks for sharing your experience and for the kind words! Glad we've been able to help you out.

Dennis

9/1/2026

Have been towing RV's for well over 40 years, when it comes to the best all around brake controller the Redarc pro is one of the best i have ever used, once installed set the bias and never think about it again, but just a heads up when you switch to a light trailer turn it down otherwise it will lock the tires. I pull my 18k 5er, than switch to my 8k equipment trailer an it works just as smooth as on either one, for the money it is the best choice.