speedometer replacement

[oceanshores98569]

--- In WanderlodgeForum@yahoogroups.com, "cape0001" <sbirtles@...> wrote:
>
> 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
> >
Didn't know Stephen had speedos for sale.
If I can get one, can you help me set up mine also??