Odds are you will have to move a few pins around if you're switching from dummy lights. Each car's dash is a little different. I don't really have any in-depth experience with anything besides Malibu/Elky/Monte dashes, but I'm assuming the same thing has to be done. Easiest thing to do would be to pull the current cluster out, and find out which wire is which. Disconnect the temperature & oil pressure wires and trace them to the cluster. Temperature is typically green & oil pressure is usually tan. Past that you will need to find out which traces on the back of the cluster are actually the 'signal' traces to the gauges. Usually the giveaway there is there is only one trace that goes to one of 3 connections to the gauge, the other two will typically share +12v and ground connections with other gauges. You may have to do the same with the fuel gauge (like I said I don't have experience specific to Cutlass gauges, I don't even know how they're laid out), the voltmeter just gets its reading from power to the cluster.
.........need help thanks for any suggestions
