【Installation Instructions】Disconnect power supply.Push terminal connected to WHITE wire onto START terminal of compressor.Push terminal connected to RED wire onto RUN terminal of compressor.Push terminal connected to BLACK wire onto COMMON terminal of compressor.Other two remaining black wires should be connected with the previously unplugged wires from the start relay.Reference the second image 【Specifications】URCO410 3 in 1 hard start capacitor kit is a combination overload, capacitator and relay device.Enhances startup function,prevents low voltage starting problems.Fit for AC120V compressor sizes 1/4 through 1/3 H.P. Including RSIR, CSIR, PSC and CSR compressors. 3 in 1 starter for refrigerator outperforms all competitors 【Economical Choice】URCO410 3in1 Hard Start Capacitor help your refrigerator or freezer compressor with enduring longer.It allows the compressor to bring down your power bill 【High Quality】URCO410 3 in 1 hard start kit is made from the high quality and premium materials,has been carefully tested by the manufacturer-meet with OEM standards-to ensure lasting and effective performance 【High Quality】URCO410 3 in 1 hard start kit is made from the high quality and premium materials,has been carefully tested by the manufacturer-meet with OEM standards-to ensure lasting and effective performance URCO410-2 packs 3 in 1 Hard Start Capacitor Kit for Refrigerators