Good morning,
You can get a great color wiring diagram here.
http://www.311s.org/tech/electrical/wiring.html
Reading through the Electrical trouble shooting section is helpful. On the
68 the cluster everything but the amp gauge plugs into the main harness.
Maybe this is disconnected. Removing the padded cover under the steering
column makes it easier to see. The fuel and temp gauges plug into a
regulator that is on the side of the steering column, under the dash. Make
sure the two wires are pushed on good.
Something I learned recently when working with electrical connection is to
keep a tube of dielectric grease handy. Whey you unplug something, squirt a
dab of grease in the female end. It will go back together much easier ,
next time you take it apart it will slide apart much easier. Helps prevent
corrosion.
If you ground the temp wire where it goes into the sender then the temp
gauge should move to hot. Same with the fuel gauge. Right under the
license plate light is a two wire harness that runs to the top of the fuel
tank. I unplug these and jump them together. The gauge goes to full if it's
working.
> Good morning,
>
> Well I am at about a 80% completion of my rolling restoration, hopefully I
> will setup a website to show the final product. But today I am working an
> electrical issue, I think.
>
> 68 1600
>
> Dashboard Gauges cluster:
>
> Fuel gauge - not functioning - have not checked the fuel sender in the
back.
> I assume that I could take a resistance reading with an ohm meter on the
> unit to see if it has a reading?? Is it not just a reostate?
>
> Speedometer - reads to fast - Thanks for all of the info this one. I am
> ordering the correct ration pinion for the 5 spd trans
>
> Amp gauge - not functioning
>
> Temp - not functioning - this is the one that scares me the most...
>
> I have looked for a wiring schematic to see if I could figure this out, to
> me since it is all of the electrical functions of the cluster, could the
> entire cluster have gone bad at once? How could I test this anyone know,
is
> there a way to disconnect the harness from the cluster and take voltage
> reading to see if they are correct?
>
> I assume that fuel sending unit is nothing more than a reostate and that
> based on the fuel level I should be able to read 1-12 VDC on the wiring
> harness depending on the fuel level.
>
> AMP - I should be able to read some amperage on the back of the cluster.
>
> If anyone ahs any tips or a wiring schematic for the SPL311 I would
greatly
> appreciate the help.
>
> Chuck
>
> PS Where should I post photos???
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