What's the best way to replace the Cluster Voltage regulator?

73 should be about the same. I just checked the amp meter for power on both sides with a test light so I'm not sure. If all the power for the guages comes in from the headlamp switch then maybe my headlamp switch has a short causing the fuse to blow and guages and lights to not work? Is that what you're thinking? I hope it's that easy! lol