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How Does the Hopkins Agility Trailer Brake Controller Know How Hard to Brake?  

Updated 09/12/2025 | Published 08/17/2025

Question:

I just purchased the hopkins agility brake controller. It claims that it uses proportional technology, however the only signal wire it tells me to tap into is the brake lamp wire, which the voltage for is either on/off on my 1997 c1500. So how is it proportional if it doesnt know how hard im pressing the brakes?

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Expert Reply:

Hey Zach. The Hopkins Agility Trailer Brake Controller HM47295 has an internal inertia sensor that can tell what force your truck is using to stop. This is why it has to be mounted at a specific angle.

expert reply by:
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Jerred H
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Etrailer Expert

Jerred H.

9/12/2025

Hey Zach, did the Hopkins Agility Brake Controller work out for you with your truck? I'm curious to know if the internal inertia sensor provided the proportional braking you were looking for. Your experience could really help others with similar setups.

Zach profile picture

Zach

9/12/2025

@JerredH Yes, thank you for explaining how it functions, you were the only source to give me a clear answer.
Jerred H. profile picture
Etrailer Expert

Jerred H.

9/12/2025

@Zach You're welcome!

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