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Old 08-29-2010, 12:52 AM   #6
joe231
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Join Date: Dec 2007
Location: Palmer, Alaska
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Re: cluster opinions/options

Quote:
Originally Posted by 77gmcjoe View Post
The tach cluster is not from an 85. The double warning lights at the bottom of the tach indicate it's a 77 to 79. If it has a mechanical oil gauge it is from a 77, if the oil gauge is electric it is from a 78 or 79. If the oil gauge is electric (and you already have gauges - not warning lights in your truck) it would plug and play in your 78. I notice it does have a newer style fuel gauge, but other than not matching visually it would work just fine.

The other non-tach cluster is from an 80 and up model truck. The newer style lettering (for lack of a better term) and 85 mph speedometer started in 1980.
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