They will interchange. I took 1 from my 94 f150 and put it in my 92 f250. Only difference is the indicator lights. They can be changed from one to the other. 94 have air bags and 92 don't so the indicator lights are rearanged.
I have done this several times. Cut it at both ends, install new wire, tape to side of the harness and its done. My customers wouldn't pay several hundred in labor for a single wire, and it isn't worth the time.
The psom is on the back of the speedometer. The cluster needs to be taken apart to access it. There is a lot of discussion about them. There are also utube videos about fixing them if you are up for soldering small parts.
Mine has tools parts and construction supplies everywhere and it's too cold to sort it all out. And now it has more dirt because I replaced a broken water pipe under a mobile home. Can't wait until spring.