Speedometer

[super duty04]

Got my conversion almost finished. The truck is an 04 Ford F 250. The first time I drove it everything worked good. Now the speedometer is not working. Is there something to look at in the wiring harness or could it just be a ground somewhere? Any help is appreciated.

 

[ozone burner]

I know on my 99 superduty it read off the rearend i dont know about your year i have to crawl under my 06 and look if it is the same if theres a plug in the rearend. Trace those wires and see if you have a break.

 

[Fummins 6.0]

could be the tach adaptor or related to the tach adaptor & wiring possiblly?
not too sure on that one?
call destroked, Preble County diesel or bean's diesel perfor. those guys could tell you anything

 

[Mo Smoke]

Fords are run off the rear diff directly then to the ABS Module, not affected by the conversion.