Interior lights speed odometer odemeter and transmission shifts hard keeps blowing 8 fuse how do you fix?

Answer 1

you might have a bare spot or some arcing going on somewhere. I would suggest inspecting your wiring to make sure nothing is rubbing or bare. It's a pain in the but to go through all of it, but worth it. Your problem is with what is called the "PSOM" or the Programmable Speedometer/Odometer module. I have a TSB from Ford and the Alldatadiy.com site showing your very concern as stemming from the PSOM. It is a board behind your cluster panel. Contact your local Speedo and Tach shop for info on a rebuilt. In the mean time you will need to get the calibration code for your PSOM. On your dash cluster push and hold the left button (I believe it is the Select button) and turn the ignition to the on position. You do not need to start the car. the speedometer will start a self check by the needle going to the right. Let go of the button. When the needle returns to 0 push the lt button again and in the odometer area a code will show like (925cal) or something specific to your truck. The new PSOM will need to be programmed by the Speedo/Tach guys with this cal # and the current odometer reading. Either the shop can do the whole job for you or you can remove part yourself if you know how. Hope this helps.