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Should Blue Brake Wire Always be Hot When Installing Brake Controller


Wiring. Blue light is constant hot.


Expert Reply:

If you are installing a brake controller such as the Draw-Tite Activator # 5504 and the blue brake wire is always showing voltage, what that means is you likely have a short somewhere that you will need to find. To do this and look for wires that may be pinched or otherwise damaged - they will be frayed or have exposed wire - and fix as necessary or replace it with 10 gauge wire # 10-1-1.

I have also added links to a help article on troubleshooting brake controllers which I highly recommend checking out. I have also added a help article on trailer wiring which you may find useful.

expert reply by:
Kyle S

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