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**dmjlambert** · 03-14-2024, 07:12 PM

There is only one row of illumination lightbulbs. There are four. Those four are responsible for lighting the entire instrument cluster.

03-14-2024, 07:12 PM	#12
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,584	Re: 72 GMC CUSTOM 1500 Dashlights Problem There is only one row of illumination lightbulbs. There are four. Those four are responsible for lighting the entire instrument cluster.