3157 3057 3357 4157 Canbus Turn Signal White/Yellow Switchback LED Light Bulbs 31 SMD, for Standard Socket, with Load Resistors (Pack of 2) Powered by 31 pieces High Power Samsung 3535 SMD LED Approx. 4 times Brighter Than 5050 SMD LED Special IC built-in for Delay AO (Amber-OFF) Function. Low Consumption. Energy-Saving. Long Lifespan Set of Load Resistors to Prevent Hyper Flash or Bulb Malfunction. Faster on/off response time with Unique/Vivid color Package includes: 2x 3157 Dual-Color LED Light Bulbs + 2x 50W 6-Ohm Load Resistor + 4x Mounting Clamp . Wattage: 31W/Bulb (1W/3535 SMD). Socket type: 3156/3157 Note: When using LED bulbs for turn signal,you will need to use load resistor or decoder set to prevent hyper flash or bulb malfunction, we already offered free load resistor for you in this listing. These load resistors WILL get really hot, as much as a working halogen bulb. Please mount them steadily onto metal surface and keep them off of any plastic parts to avoid plastic from melting down.