Hey Jim,
These speedos are tricky but do not give up just Yet.
They are obsolete, when replaced you will probably lose the trip
meter and the new speedo may not match the other gages. First check
the ground wire attached to the frame. On our FC it is located on the
rear wheel passenger side, then look at the sensor pickup mounted
near the toothed brake drum, that is where the signal in generated.
Check the 12 volts DC to ground at the speedo.
Next hook up an AC volt meter on a low voltage scale to the speedo
ground and the sender terminal, Take it for a ride and the meter
should register a low AC voltage and increase as your speed increases.
This is a sine wave that increases in amplitude, It would be nice to
have an ocilliscope for this , But not necessary. This will isolate
the problem to the sender or the speedo. As you drive tap , tap, tap
on the face of the speedo , see if there is any change in the needle.
When you have exhausted all options and have determined that the
speedo is really dead. Remove the speedo and open the face and look
for loose , pinched wires or cracked/cold solder joints.
There are a lot of parts inside the speedo head.
This has work for me, Our speedo now hums along and trips the meter.
There are speedo shops that may repair it.
Bill 88 FC Michigan
--- In
WanderlodgeForum@yahoogroups.com, "jqrjr"
wrote:
>
> I have an 88 WBWL, my odometer does not work. Teleflex made these
> special for BB it has a special wire out for the trip odometer.
Does
> anybody know where I might get a new replacement speedometer for my
> coach?
> Repair the old one, or some thoughts?
>
> Thanks
>
> JIM Riordan
> 88 WBWL XXV
> Stuart, Fl.
> 772-260-1328
>