I just installed a new 89 si cluster and only the lights, and signals work. The gas, tach, and thermostat doesnt work. i dnt have a speed cable so i kno why that doesnt work. can anyone help me??? i would like to kno my rpms and how much gas i got lol

 

check the connections at the back of the cluster, maybe its not on right.

otherwise, you probably got a cluster from a junkyard that went through flood and rain.