Thanks Chris. As soon as I hit send on that last email I realized it didn't
make sense to have the other terminal as a ground. I figure I may be able
to tap into the power from the fuel gauge. Doesn't it work in much the same
way?
Thanks again,
Greg
On 8/14/06, Chris King <cbking@alum.rpi.edu> wrote:
>
> You need a +12V supply. Remember, the sending unit is just a variable
> resistor (the resistance changes with temperature), and the gauge is simply
> an ohmmeter in series.
>
> In other words, its: +12V ---> gauge ---> sender ---> ground.
>
> In this case, ground is the engine, where the sender is screwed in to.
>
> You can probably get +12V from one of the green wires on the dash harness.
> If you have a Haynes manual, you can double check against the wiring
> diagrams for the '78 and '79 Midgets.
>
> Hope this helps.
>
> -=Chris
>
>
> Chris King http://home.comcast.net/~kvcbk/
> <-----Original Message----->
>
> *From: Gregory Groiss*
> Sent: 8/14/2006 1:59:40 PM
> To: spridgets@autox.team.net
> Subject: Temp Gauge Wiring
>
>
> Hello All,
>
> On the back of the electric temp gauge there are two terminals. One
> goes to the sending unit in the head and the other goes to ???? Is it
> a ground? Also, neither post is marked what wire goes to what post? I
> am switching from the manual temp gauge so I have no reference point.
>
> Thanks,
>
> Greg
> '73 Midget (partly painted with a touch of orange peel)
>
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