Set of 4, great value, for 12V and 24V vehicles! Prevents hyper flash when replacing stock turn signals, brake lights, and position lights with LED bulbs! Includes 4 hyper flash prevention resistors (24V 50W 27ΩJ) and 8 connectors! Because LED bulbs consume less power, issues such as hyper flash, non-flash, and warning sounds may occur. This is a must-have item for such situations! High capacity 50W! (Supports heat generation up to 50W) The main body uses an aluminum heat sink for excellent heat dissipation. Easy installation with just a pair of pliers! Install by bypassing the + and - of the turn signal. Generally, one resistor is required per LED bulb.