These led strip light works on 12-volt only, 2
wires connection: The Black wire is Negative and the Red wire is Positive. The lights backing with stronger 3M VHB double-side adhesive, just peel off the paper and stick to surface, the adhesive surface must be clean and dry, Itd better to clean the surface with alcohol, Please test the lights before stick to surface, Please check polarity before wiring.