My dash lights/gauges dim and flicker..Is it the voltage regulator or maybe dirty ground. Another condition, the bright light indicator and turn

signal lights go on (dim). Any thoughts ? Thanks

What is the wiring like at your alternator? Cracked and crumbling?

Is the ground wire attatched to the 8mm post in the back?

Also check where the wiring curls under the lower crank

/// This sounds like two possible problems. For the dash lights and gauges flickering and dimming check the dimmer control and/or connectors in that circuit.

For the turn signal check the fuses. Hold your hand over the fuse block while the lights are in use and cean any fuses that are hot. There have been some posts citing bad connections in the fuse holder so you might check the voltage at the low side, away from the battery. You can check for voltage drop across the entire fuse. Any voltage reading means that there is resistance, corrosion between the two measuring points. There are screws that hold the turn signal switch on the steering wheel that become loose with vibration. I don't know if the loss of ground there would cause your problem.

Could be time to check the alternator brushes.