Most likely it is only powered when the lights are on. Yours may be different, and hooking it up is the only way to know for sure. If you have a multimeter you could check the out put of the pigtail before you install. Having the lights on to activate is not a big deal IMHO. YMMV ,though.
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Chip Bruce, RPh
Kansas City, MO
2016 Impact 312
2017 Silverado 3500HD SRW
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