, adorable but utility for interior vehicle lighting: RV, caravan, camper trailer, motorhome, bedroom, headboard, wall light and overhead light. 2. Special dual lighting mode: cool white light for reading light and blue light for night. Click the programmed switch once for blue light, click it again and hold for a while for cool white light.3. The light output is quite soft for reading. Besides, you can adjust the light lighting direction with the flexible heat dissipation ensures stable performance and long diode is energy saving and long lasting. The light has a long lifespan of 50,000 surface mount installation. Wiring: black wire for positive and white wire for negative/ground.