What is High and Low Voltage in Cars
Updated 11/17/2025 | Published 12/19/2024
Question:
Im looking at the Curt 51170 brake controller and it says its Compatible with low-volt, PWM, ABS, cruise control and electric over hydraulic. My question: What is low-volt? Does that mean the red wire might have a lower voltage on it than battery? Please help me understand. Thank you!
asked by: Monnie
0
Expert Reply:
Hey Monnie, so from what I can understand low voltage wiring is 50v or less. There is also high voltage which is classified at 60V or higher, but this isn't super common unless you're using an EV (most of the time).
expert reply by:
Bryce D
0
Product Page this Question was Asked From
etrailer Rubber Hitch Cover for 2" Trailer Hitches - Qty 1
- Hitch Covers
- Misc Covers
- Plain
- Rubber
- Fits 2 Inch Hitch
- Standard
- Square
- etrailer
more information >
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Chris R.
11/17/2025
Hey Monnie, did that explanation about low voltage help clear things up for you? Knowing how that applies to the Curt brake controller could be useful for others wondering the same thing. Your feedback might help the next person understand it better.