94 Ram b350 speedometer failure

lawndart360 said
I used a 94 van as a doner vehicle for my drivetrain swap. I found the speedometer was driven off the ring gear in the rear differential, I think you will probfind a bad pick up on the diff, the one for my Dakota cost about $29 and was a simple swap.

If its similar to just about everything else, the antilock brake processor supplies the signal to the speedometer. It does get its input from that rear sensor.