SAWE - T10 Wedge 921 194 28-3528 SMD LED Bulb lamp DC 12V for RV / Travel Trailer (20 pieces) (Warm White) Package Included: 20 x T10 Wedge 921 194 28-3528 SMD LED Bulb lamp DC 12V for RV / Travel Trailer (Warm White) Cross Reference: W5W 194 192 168 175 2825 579 147 152 158 159 161 184 193 259 280 285 447 464 555 558 585 655 656 657 1250 1251 1252 2450 2652 2921 921 906 579. Only for DC 12V vehicles Interior Reading Dome Map Cargo Trunk Door Doorstep Courtesy Instrument Panel License Plate Side marker Position Glove box lights. Common use for Car, Truck, Motorcycle, Scooter, Trailer, RV, Boat, Marine. Notice: All LED bulbs have to be plugged in a certain way, it has Positive and Negative. Simply flip it 180 degrees if the LED does not light up.(Reverse the polarity) SAWE is a registered trademark protected by the US Trademark Law. Make sure buy from "" SAVEICON "" to get the quality and authentic product plus the Superb Customer Service.