madmazda
+1y
You'll have to undo it from behind the bezel... take these steps, it worked for me.
1.) Take out the plastic bezel around the speedo with your Dimmer switich on it. (4 screws)
2.) Undo the 4 Screws holding the bezel to the dash.
3.) Inch the bezel out slowly.... be careful
4.) Pop your hood, and find the speedo cable, Push it up a little bit towards the inside of the truck, Lightly though (we dont wanna brake anything)
Then Repeat Steps 3.) and 4.) until you have the bezel out enough where you can unscrew the speedo cable from the back of the bezel, and unplug the 3 harness'..
Hope this helps?