Usage Tips:Relays specification: 1. heavy duty SPST relays 2. 12 Volt 60 amp 4-Pin relays 3. Mechanical life of 10,000and cycles 4. High 60A coil capacity- able to handle those high current applications with ease 5. Hundreds of uses include- starter kills, dome light supervision, trunk release, polarity change, power door lock or actuator control, change a low current output to high current, add ignition or accessory outputs, control motors or other electronics, It is Also suitable for automobile used for control, alarms, horn, headlight and more.... Vehicle Electronics' Relays are designed and manufactured to meet or exceed original equipment manufacturers' specifications for performance and durability. Multi-Purpose Relays are used to control electrical circuits for components on a vehicle that have a high amperage load such as headlights, fuel pumps and cooling fans. A malfunctioning or inoperative Multi-Purpose Relay will cause a component to not function or function intermittently. Depending on which circuit is affected, a failed Multi-Purpose Relay could cause a no-start condition, proper vehicle operation and impaired safety systems. When diagnosing a failed Multi-Purpose Relay the corresponding fuse should be checked as well as verification that the amperage draw of the component on the circuit is within factory specs Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.