I had a speedo that bounced around a lot. I purchased a PSOM (programmable speedometer odometer module) which was supposed to be close my mileage. The "new" PSOM worked fine but I wanted to lose the 75K additional mileage it had on. I tried the "new" circuit board with the original speedo and now I have nothing. Anyone work on these? Anyone have a PSOM with circa 105K?

Thanks Ron Stauffer

 

i know there is somewhere you can send them with your old one and they will match the mileage. look around for something like that.

 

I think these guys can help you
Electronic Speedometer Service

I have a cluster but it has 204K on it

 

Ford will do it also.....