Wiring harness used with the ER5220 regulator if the tractor is equipped with a 4 wire plug on the old voltage regulator and a roughly 1" rectangle black box mounted next to it. The new regulator contains all of the electronics from the black box and the old regulator. This harness eliminates the old black box.
Shop Note: Please note that the wire colors may not match your tractor. The color of the wires was changed several times throughout production. The harness is mated to the correct terminals not necessarily wire color.
Instructions: Just plug one end of the adapter into your new regulator. The other end of the adapter into where the black box was plugged into and the other end of the adapter into your tractor's wiring harness.
