
I used this switch to control the trailer lights on my cargo trailer. Whenever the lights were connected to the wiring harness, they would come on regardless of whether the parking lights were on or not. Checked for grounding issues and other suggestions but found that this is how the light control works. Turn on this switch so I can just turn the light on manually and not worry about running out of battery. Works great. The LED is bright but not obtrusive.

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