Is there a fuse that controls the headlamps on the 97 Expedition?
Check your owners manual. If you don't have one copy & paste this link. http://www.genuineservice.com/genuineservice/en/gloveboxresults
I had a blown 25 amp fuse in the fuse box under the hood mounted on drivers side fender, it was labeled for power outlet, I believe it was fuse #11. I removed the other 25 amp fuse for the other power outlet and installed it where the burnt fuse was and my instrument cluster worked. It was not labeled for the instrument cluster.
The fuse for the speed control is in the main fuse block under the hood on the left hand side. It is number 20 fuse .To locate this fuse in the block, If the large fuses are on your right the fuse you want is fifth row from left ,fourth row down.It also controls the heated rear window and is a 10 amp fuse.