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slowpoke

Tach died, and one dash light

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Last night during a blast up the mountain my tach wavered then died.  Is it a mechanical tach?  If so, then i think the cable broke.  That sound reasonable?  Then, insult to injury, the associated tach light bulb burned out.  That’s a dash module pull?  Let me know if i should be on the lookout for anything as a dig into it.

 

thanks.

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(edited)

Electric tach and yes it would be a dash module pull to get to the bulb and/or the tach connection. The dash module is pretty easy to remove. Remove two knurled nuts and remove the speedo cable and out it comes. Once it is loose and accessible, unplug the module and you have access to the wiring and the module.

 

Also check the black wire that is connected to the distributor (the tach feed wire).

Edited by Mike87

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Awesome!  Thanks for the insight.  I had an old Alfa GTV w/ a mechanical Tach and that thing pulsed like crazy.  I’ll check the ground.  Hopefully that’s all it is.  

 

 

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Also--the wire that serves the tach at the cluster end is not part of the multi-prong plug; it's a separate wire since some cars came with clocks and others with tachs.  So it's possible that the tach wire at the cluster end has come loose.  You'll see it when you remove the instrument cluster.  If you've not done that before, check the archives for how-to's...

 

mike

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