Review on 🔌 ALOVECO 12V DC Dimmer Switch: Perfect for RV, Camper, Truck, Marine & More! by David Jennings

But really a 5 star rating. I love it. Well built. Happy to order another one. Just a caveat. DO NOT OVERFILL POLARITY! The application I wanted this for should have positive dimming. This is negative dimming. This means that the negative side of the voltage is reduced and not the positive side. The result of polarity reversal is a smoke show. Yes, I smoked it out of a pack for ten minutes! Connected correctly, stood perfectly. I don't care at all. The only reason I gave it 4 stars is to point out my mistake and spare you the same. Both red wires are labeled Input+. I don't think it plays a role in my problem because it hides the negative side. The positive should be through. In the photo of the dimmer there is a bump where it smoked (melted).