CrazyEve 4 Pack DC 12V 30/40 Amp SPDT 5 Pin Waterproof Automotive Relay + Harness Sockets COIL VOLTAGE: 12 VDC ,Max. switching current: 40A 5 PIN AUTOMOTIVE Relay is waterproof. CONTACT RATING:NO(Normal Open): 40A 14VDC;NC(Normal Closed): 30A 14VDC 16 AWG HARNESS come with 5 inch leads GREAT FOR adding car stereo, starter kills,alarm system, remote start, fog lights, undercar lighting, turn on domelight, shared door handle,add ignition/accessory outputs,truck release, reverse polarity, door locks, honk the horn and more