speedometer replacement

[cape0001]

thank you ralph
I have other gauges be sure to call and make sure I Have the gauge you want
Stephen 97 BMC 37
888 668 4288


--- In WanderlodgeForum@yahoogroups.com, "Ralph L. Fullenwider"
wrote:
>
> There was a thread on this some time back about a speedo replacement from
> Stephen B. I ordered one as well and had no problem in figuring the math
> and programming the new speedo. What I did have a problem with was an extra
> wire coming from the back of the unit, one was grey and the other blue. The
> grey powers the hot side of the magnetic sensor, I took the blue to be a
> ground and was wrong about the blue, removed it out of the circuit and the
> speedo worked very well.
>
> I found some calculations on line for the programming. my tires rotate 502
> times per mile and that times 60 teeth on the BB drive drum times the
> constant give you the ones and 10's binary switch positions and using the
> sum of that equation plugged into a second constant give you the hz rate
> figure to set the switches up with. Speedo is good and replaces the
> original exactly. Thanks Steve
>
> Safe travels,
>
> Ralph and Charolette Fullenwider
> "84FC35 "Ruff Diamond"
> Duncan, Oklahoma
>