Is The Redarc Encapsulated Power Diode # RED34FR Needed On a 2016 Toyota Highlander W/ Redarc Elite?
Updated 09/04/2025 | Published 10/11/2022
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Question:
Having a problem how to hook up the red arc encapsulated protection device kit Does my highlander need this if so where do I wire it into
asked by: Terry
Expert Reply:
The Redarc Encapsulated Power Diode # RED34FR is only needed on vehicles with certain advanced safety systems like the Adaptive Cruise Control, Assisted Emergency Braking and Autonomous Emergency Braking. If your 2016 Toyota Highlander has these features the Diode will need to be installed into the harness for the Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR. I have included an image with the wiring that will need to be connected.
(click to enlarge)
Product Page this Question was Asked From
Redarc Tow-Pro Elite Brake Controller - Dash Knob - Off-Road Mode - Up to 3 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Splice-In
- Dash-Mounted Knob
- Behind-Dash
- Up to 3 Axles
- Indicator Lights
- Single Trailer Only
- Redarc
more information >
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Mtn
9/4/2025
Thanks for this diagram. I went to install this on our 2023 Sienna and wondered about the "extra" red wire (right). This made it make sense. Thanks!