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How Does the Brake Buddy Get Power When Flat Towing  

Updated 11/13/2025 | Published 10/23/2025

Question:

Does the brake buddy work with power brakes and engine not running ?

0

Expert Reply:

Thanks for your question, Dale!

The Brake Buddy Classic 3 part # HM39494 will pull power from your Xterra's battery. You will also want to pick up the charge line kit part # RM-156-25 so that you can keep the battery charged when flat towing. We also have the Curt RVi Series towed battery charger part # RVI74FR. What's really cool about this one is that based off the color of the LEDs it will tell you the health or status of your vehicle battery.

Let me know what you think or if you have any more questions.

expert reply by:
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Gwendolyn Y
BrakeBuddy Classic 3
BrakeBuddy Classic 3
(click to enlarge)
Curt RVi Battery Charger
Curt RVi Battery Charger
(click to enlarge)
Battery Charger LED Chart
Battery Charger LED Chart
(click to enlarge)
Gwendolyn Y. profile picture

Gwendolyn Y.

11/13/2025

Hey Dale, how did things go with the Brake Buddy setup on your Xterra’s power brakes? Your update could make it easier for others wondering about battery power when flat towing.

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