I figured out how that thing works and it won't work unless it is grounded.
However, I have 3 or 4 of them and all of them put out full voltage if
they are not grounded. Basically it is a flasher and it stays closed (full
voltage out) if its circuit is not grounded. That must mean that it has
failed. Still, seems strange that it decided to fail at this point. In my
experience they are petty rugged, short of being crushed. It is possible
to hook it up backward, but that just makes it act funny, not fail
completely. Make sure you are giving it a good ground. Normally it
grounds on the speedo, but if that does not have its ground wire it may be
a poor ground.
Sam
At 09:22 PM 9/19/1998 -0700, Chris DeStaffany wrote:
>
>The speedoi in the spit hasn't worked for more than ten years according to
>the PO. Replaced the missing lower cable today and that was a bit of an
>adventure. Lots of cleaning around the EGR counter which had the bottom
>connection exposed for ten years. So, I put it back together and "joy",
>speedo works. Temp guage and Fuel guage don't however. Voltage stabilazer
>dosen't seen ti be putting out. Short across the unit and the guages come
>back to life. Now, did I kill that unit while working behind the speedo or
>was it just time for it to go or am I doing something else wrong. The thing
>is just hanging there, loose. But grounding it dosen't make a difference
>and the wiring diagram dosen't look like it needs it.
>
>Chris DeStaffany
>1966 Herald
>1975 Spit that shows more gas on the guage the faster I go.
>
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