lush90
+1y
You can access the blower fan by removing the glovebox. Open the glove box and carefully pry up on the two shiny black "catches". They slide and pop out, allowing the box to drop out of the way. My blower wasn't operating at first because a ground wire wasn't connected. You should be able to see the ground wire when the box is out of the way. I have three of these trucks, '90, '91 and '94 and the blowers work fine in all three, so I don't think it's a common problem. I'm sure you checked the fuse for the blower, I believe it is a 20 amp in the upper right of the fuse box, listed as "heater". On my '91, this fuse terminal was burned out and I had to splice in an inline fuse to bypass the fuse box to get it to work properly.
As for the horn, there is no button. It is a copper sheet held away from contact by a layer of foam rubber. I had to replace the foam in my '90 because the horn would sound when I turned the wheel.
Good luck!