115 Speedometer

["speedsixer" <speedsixer@xxxxxxxxxxxxx>]

I've been cruising the Pacific Northwest on an extended vacation 
in my GTV almost trouble free for a month now. One aggrevation is 
that the speedometer cuts out frequently on long drives. Sometimes 
after only 7 or 30 miles. Sometimes it will come to life on its 
own, but usually it returns only after the car has been shut off 
for a while. On these cars, does the speedometer work by the cable 
spinning a device that creates an electro-magnetic current which 
causes the needle to rotate? Any quick or temporary fixes? Is it 
possible that the end of the cable slips in the back of the 
speedometer or is it more likely that there is an electrical short 
in the instrument?

Replies most welcomed.

Dave
74 GTV
(temporarily in Seattle)
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