This pigtail is ideal for equipping tractors with the 3 wire electrical convenience outlet that couples with John Deere RE37651 implement plug. Common used to power baler/planter monitors, scales, spryer controllers, etc. Deere does not offer a kit to add to competitive equipment or older tractors that did not come equipped with this convenience outlet so this pigtail works well to wire one up yourself. It is highly recommended that you also install a suitable circuit breaker in line as well. Three color coded wires, black for ground, red for continuous hot and orange for keyed hot. Replaces individual part numbers 57M7390 plastic plug and 57M7388 electrical terminals which retail over $80 from Deere.