Need help with speedometer switches

What is the brand of speedo? It matters. Switch settings are different on them.

 

Engine make matters also. Post your last six. Did you change axle ratio or tire size?

 

When I had to change mine a few years ago I followed the directions that come with it, done the math, set the switches accordingly took it on a drive and the darn thing was like 30mph slow. So using the speedo on the satellite system the company I was with then had me install and the switch position list I just started going up the list till I found the magic combination.

I've heard these fancy GPS things tell you what your speed is (wouldn't know I ain't got one) if you've got one or can get your hands on one for a little bit you could do the same thing I did

It might not be 100% accurate but it should be darn close

 

I have instructions for a few types. If the OP would just come back to answer my question on what the speedo manufacturer is. Why ask questions on a forum if you don't come back to find the answer?

 

I've wondered the same thing myself more than once