67 fury fuel guage

67 fury 3 temp and fuel guage not working, reading through forums and i see a common cluster voltage regulator problem. Tested the temp sensor wire and i get good ping on the light. Fuel sending unit wire nothing.
Cluster voltage regulator should either be good or not correct? I can't see it working for one and not the other. Ground issue?
Obviously I need a temp sensor. Looking for opinions. Thanks
Author: B2fast87