So I have a Chevelle that is LS swapped. I want to add a tach and speedometer from a 87 Trans Am. I don’t have the full cluster, just the gauges. Can anyone tell me which terminals on each gauge are the power, ground and the signal? I can post pics of what I have later if needed. The gauges were in a Monte Carlo that I bought so I don’t have any info other than what I mentioned

 

I need to know which wires go on the screw terminals if anybody has the info. It’s not labeled like the wiring diagram is.