Using KC HiLiTES on Electric Vehicles (EVs): A Guide

Electric vehicles (EVs), such as the Tesla Cybertruck, Rivian R1T, and Ford F-150 Lightning, often operate on high-voltage power systems, typically ranging from 48V and up. This can present challenges when installing aftermarket 12V vehicle lighting, including KC HiLiTES products. Here, we’ll outline the best practices for using KC lights on EVs with high-voltage systems to ensure proper functionality and longevity.

Why EV Power Systems Differ

Most EVs have high-voltage power systems, which enable the vehicle's efficiency and high performance. However, aftermarket lights generally run on a standard 12V system, which is compatible with conventional vehicles but requires a few adaptations for EVs.

Recommended Setup for EV Compatibility

1. Use a Dedicated 12V Battery for Lighting
  Many EV owners find it beneficial to install a separate 12V battery specifically to power aftermarket lights. This ensures that the lights receive a stable 12V supply without risking complications with the EV’s primary high-voltage system. It’s important to choose a high-quality battery capable of handling the amperage demands of KC HiLiTES, especially for models like the Pro6, Gravity, and Titan bars.

2. Install a DC-DC Charger
  To keep the 12V battery charged, a DC-DC charger is recommended. This device steps down the EV’s high voltage to safely charge the 12V battery. Unlike simple step-down converters, a DC-DC charger maintains efficient and stable power, ideal for consistently operating high-output lights.  

3. Wiring and Testing  
  Once the 12V battery and DC-DC charger are in place, wire the KC lights according to their respective instructions, as if installing on a standard 12V system. This includes connecting to a KC wiring harness for easy control of the lights. Test each function—main lighting, backlighting, etc.—to confirm proper performance.

Key Benefits of a Separate 12V Setup for EVs
- Stable Power Supply: Ensures that your lights run at full capacity without fluctuations due to high-voltage system differences.
- Extended Lighting Performance: Proper charging and wiring reduce strain on the EV’s main battery.
- Compatibility Across EV Models: This setup can be adapted for most EVs with high-voltage systems, making it versatile for various vehicle makes and models.

Important Considerations
- Battery Quality: Ensure the 12V battery you select can handle the current required by high-output lights, such as the KC Titan or Gravity Pro6.
- Safety First: Always consult a professional installer if you’re unfamiliar with handling high-voltage systems.
- Avoid Step-Down Converters: Using a step-down converter alone may not provide the reliable power that KC lights need, especially for extended use or higher-amperage models.

By following these guidelines, you can confidently install and operate KC HiLiTES on your EV, achieving the same quality lighting experience as with traditional vehicles. A dedicated 12V battery and a DC-DC charger provide a reliable solution, ensuring that your lights work as intended and extend the life of both your lighting and EV’s main power system.