Because this is a
installation kit it will fit the 1980 as well because the bottom clock harness connector down low next to the heater control panel on the right side where it hooks to the main harness is the same as 1980-1982, and the kit comes with the updated clock wiring extension harness.
The clocks have a different connector
at the clock itself, between 1980 and 1981-1982, but this kit eliminates that problem because of the
included wiring that connects it to the main harness.
If this makes sense.
Now if this was just the clock itself, without that wiring harness extension piece, then you would have to worry about having the right harness for the different clocks. 1980; 1981-1982.
1983-1986 is also different.
Hope this helps.
Truck: 1981 F-150 Explorer / Engine: 300-6 California MCU Feedback System / Trans: T-18 - 4 speed / 2.75 Ford Rear Axle Open Diff.