This inexpensive LiftMaster 41A6790 garage door operator wire harness kit from North Shore Commercial Door is designed for use with LiftMaster 3840 screw drive operators. The wire harness kit includes one orange work light wire harness, one white work light wire harness, one battery wire harness, one encoder wire harness and two nylon cable ties. Disconnect all electrical and battery power sources before replacing wiring harnesses.
- For LiftMaster 3840 screw drive operators
- Includes 1 white + 1 orange work light wire harness
- Kit includes 1 battery wire harness, 1 encoder wire harness
- 2 nylon cable ties included