Check the listing for details. MSD 89612 Solid State Normally Open Relay with Socket Harness. Condition: New. Listed at 62.99 USD. MSD's Solid-State Relay w/harness are ideal for use on electric fuel pumps, water pumps, and cooling fans. The high-power controlled circuit handles 30 amps momentary and 20 amps for continuous use @ 12VDC and is energized by the low-power activation circuit. The pigtail harness has 11" long leads w/ heavy-duty 14-gauge wire.The benefit of a solid-state relay is that it has a faster activation circuit and no moving parts that wear, which increases the life of the relay. The absence of moving parts makes the solid-state relay less sensitive to mechanical shock, vibration and moisture. Mini Solid State Relay. Max Inrush Load - Overload Protected at 80A. Continuous Load - 20Amp. Nominal Voltage 12-Volts. Max Coil Voltage 16-Volts. SPST Normally Open. Pigtail harness 14 AWG wires, 11” Long.