Check the listing for details. Jtech 10x T4/T4.2 Neo Wedge Dash A/C Climate Control HVAC Switch LED Light Bulb. Condition: New. Listed at 8.49 USD. Product Description & Technical Details- Direct replacement for T4, 79674-S3N-941/36774-SEP-A01/79628-S2A-003/35855-S2A-003/35851-S2A-003/35855-S2A-A13 etc- Please check the base diameter of your vehicle's bulb or the compatible part # before placing an order. - This bulb is for the 10 mm base to fit as shown in the photo. If yours is 8 mm, please select T3 model (eBay item number: 121746497683). https://www.ebay.com/itm/121746497683 If your is 12mm, please select T4.7 model: (eBay item number 111335072029). https://www.ebay.com/itm/111335072029- If they don't light properly after inserting into the socket, please insert oppositely or flip the bulb horizontally to match the + and - polarity. Also, try to pull the pins on the base outwards a little if the bulb is slightly loose or there is no good contact in the socket.