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Speedo cable?

I won’t be able to dig out my shop manual for a while, so thought I’d ask here…

1991 Chrysler LeBaron convertible. The odometer stopped working a few months ago, but the speedometer still works. I was under the impression that cars of this age ran both gadgets off of a single cable from the transmission. So if one is working and the other is not, it implies a problem in the instrument cluster. Or is there a chance that this car would run the speedometer off an electronic signal?

When the speedo works but odo doesn’t, it points to the instrument cluster.

And vice-versa.


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That was scary fast. Thanks.