VANSSI BA15s 1156 7506 21-SMD LED Replacement Bulb for Reverse Backup or Turn Signal or DRL Lights Bubls 6000K White (Pack of 2) Fit 7506 or P21W or BA15s socket for Front or Real turn signal lights or DRL or backup reverse light Energy-Saving.1/4 power of original halogen bulb.Powered by 21 pieces high power 3535 SAMSUNG SMD LED lights with 10W output. Size:53 x 18 mm;DC12-24V.Non-Polarity Design.White 6000K Energy-Saving design.1/4 power of original halogen bulb.this item is not CANBUS Model.We can not Guarantee it work without error on all brand vehicles. but still have Certain vehicles may need a resistor module (or decoder) sold separately to prevent "bulb out" messages or to allow the lights to operate correctly. This has to do with the vehicles CANBUS system and is not the fault of the LED bulb. Unfortunately we cannot test every model to state if you need these resistors or not. Buy with No Worries! We offer "1 YEAR" warranty,if the items are damaged during delivery or has any other quality problem,you can send them back,we will refund your money or send you new ones.