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**66gmcguy** · 03-15-2022, 11:27 AM

The gauge cluster will physically bolt up to the dash and the plug will also connect to it, but as mentioned above, I would definitely check the wiring. I fried the printed circuit trying to plug in the cluster from an 1973 truck to a 1980 truck. There are several wiring diagrams available for each year and they should show the pinouts for the gauge cluster.

03-15-2022, 11:27 AM	#3
66gmcguy Senior Member Join Date: Oct 2014 Location: Bay Area, CA Posts: 351	Re: 1979 k5 using parts from a 1986 k5 The gauge cluster will physically bolt up to the dash and the plug will also connect to it, but as mentioned above, I would definitely check the wiring. I fried the printed circuit trying to plug in the cluster from an 1973 truck to a 1980 truck. There are several wiring diagrams available for each year and they should show the pinouts for the gauge cluster.