Maintenance Airframe
Distraction; Fatigue
Deviation / Discrepancy - Procedural Maintenance; Ground Event / Encounter Other / Unknown
General Maintenance Action
Human Factors; Environment - Non Weather Related
I was moving a lift to do a door lube.  When done with the R2 door I moved the lift while looking to the rear; I did not realize that the lift was in drive not reverse.  While looking over my shoulder I felt the tug go forward I hit the brakes.  I did not feel it strike the aircraft. I then moved the lift to the L2 door and completed the lube on the L2 door and then moved the lift back to the parking area.  I did not know that I had contacted the aircraft until notified by the Senior Manager.  The lighting was poor and I had never done a door lube on this type of aircraft.  I also had just came back from almost three weeks off from being quarantined for COVID-19.  I was not used to night and was very tired.When selecting the lift to Reverse it inadvertently ended up in Drive.  Some of our lifts have drive forward on the gear selector and some have drive in the back of the gear selector.  Shifters are not lit and some go forward to go forward and some go forward to go aft.I really have no idea [for suggestions] other than making sure all lifts have the gear selectors the same way.  Gear selector levers should be lit at night so they can be observed.
Technician reported making contact with an aircraft after moving a lift in the wrong direction.