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Troubleshooting No Brake Light Signal After Installing Hopkins Tail Light Converter HM48895

Question:

I am using this to combine turn and brake lights on a 1941 Chevrolet. The rear lights are 2 circuit LEDs. I have the turn signals and running lights working, but no brake lights. I do have power to the red wire from the brake light switch at the converter when brakes applied but nothing on the t/s output side. What am I doing wrong?

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Expert Reply:

Since you confirmed that you have brake light signal on the red wire, but are not getting brake lights there is one of two things happening.

One is that the ground is not getting a good connection which causes issues when more than one function is trying to work like what you are experiencing. I would double check that the white wire is securely connected to clean, corrosion free metal.

If the ground checks out then the converter may have an internal issue since you mention power is coming in but not out. To fix this would would need to replace the harness with another # HM48895.

I included a video of the # HM48895 and a link to a helpful article on wiring for you to take a look at.

expert reply by:
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Samuel C

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