Wiring to a 2025 Toyota Tundra Hybrid Truck- Victron Orion-XS DC to DC charger- Looking for help

Q&A and troubleshooting
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1

So I want to wire in a Orion XS DC to DC charger-IP65 Dust & Waterproof - 12/12-Volt 50 amp 700-Watt. I have no experience with Tundra wiring and want to know who to consult to make this happen. The plan is to have charging going on while I am traveling even in incremental weather and at night. I believe that the Tundra has a smart Alternator but get various responses as to that. So need your help in finding the resources to make this project happen. Thank you.

2

Hello ! I have the same problem with a 2026 Silverado. I did not try it yet but I have found a technique that can fit to your problem

Disconnecting Methods

Method 1: Unplugging the Negative Battery Sensor (RVC Bypass)

  1. Locate the current sensor on the negative battery cable (a plastic ring near the battery where the negative cables pass through).
  2. Unplug the small wiring harness connected to this sensor.
  3. Result: The ECM will detect a fault with the current sensor, default to a safe mode, and continuously charge the battery at a flat rate of ~ 14.0V - 14.4V. This will not trigger a check engine light, but may trigger an informational dash message. [1]

Please advice if you find a solution that works !

Thanks.

3

Hi Patrice T. - So reality is I am searching for appropriate plans to wire correctly the 2025 Tundra Hybrid truck. Its going to be different then a standard truck because its hybrid. I am hopeful someone has looked at it and may have some experience in the matter. Good luck on your build with your Silverado. If its not a hybrid you will probably have an easier time doing it!

4

Hi @toddkilleen - we’ve had a couple of Prius, and I had a look at a Tacoma at one point. They all use a DC-to-DC converter that takes the high-voltage traction battery to step it down to 14.5V to charge the smaller 12V AGM battery (under the left rear passenger seat in the floor) that runs the brains, lights, and accessories like the radio etc. You can probably find some info on Toyotanation.com or Tundras.com or better yet, talk to a service tech at the dealer about where to get +12 safely (eg pay for a few minutes of tech time, and pretend you are installing a massive stereo!). My guess is you could probably safely draw 40-50A, but I can’t tell you where to connect.

Good luck and let us know what you find out.

5

Thats a great idea. I have actually paid a tech at a car stereo place to get me similar answers before. People love money!