Does the starter relay 12v battery post need 12v?

74Scooter said
Still don't understand these high output (amperage) alternators with a tiny *** charging stud

The alternator CAN provide 95 amps .

But it only provides the current that the loads require.

Think the 20 amp wall outlet in your house.

If you plug a 60W lamp in it. The lamp works and is only pulling 0.5A where as a hair dryer pulls 1200W and pulls 10 amps.

Both work, just fine.

The small guage wires might be going to individual circuits that only pull 5 amps?

Just guessing what the PO was thinking.