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Should Brake Output Circuit on Vehicle 7-Way Always have Low Voltage on It  

Question:

Without any thing connected I have real low voltage coming out the blue wire. Is this normal or should it be dead when nothing is activated. Thank you.

1

Helpful Expert Reply:

That super low voltage you are seeing on the brake output circuit is actually the brake controller continuously testing to see if it can find a connection to trailer brakes. What you are seeing is totally normal.

I attached a help article on brake controllers for you to check out as well though.

expert reply by:
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Jameson C

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