I had an impact 303 that had a switch that wasn't labeled (actually, none of them were), and I looked and looked and just couldn't figure out what it was for. Accidently, I flipped that switch on instead of the one I meant to turn on and forgot to flip it back of. Later that day, as it was getting dark outside, I stepped out of the trailer and a blue glow caught my eye. Low and behold, there were small LED lights inside the outdoor speakers, and the unknown switch is what turned them on and off. It's worth a try if you have outdoor speakers!
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2016 F350 King Ranch Crew Cab Dually Diesel 4x4
2018 Grand Design Momentum 394M
2023 Suzuki GSX-S1000GT+
Excessive payload capacity is a wonderful thing
"If it ain't Fast....It ain't Fun"
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