I own a 2007 Silverado and I am interested in swapping out the instrument cluster. Currently mine is bare bones...speedo, tach, fuel, temp. I am wanting one that will have the oil pressure and volts as well as the gauges I have now.
I want to know if the wiring and connectors are already in the harness or if I will have to rewire for the new cluster?

 

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Possibly yes, but potentially no. I'd try it and post on it. You know for like less then $100 you can get after market gauges and hard wire them yourself. looks sharp too. I have the same problem with a lack of RPM and a few others I would like to know, so Im going to put the 3 pillar gauge up by my driver side window with the black out gauges