Alternator Upgrade

The electrical engineering on our American cars in the 70's and beyond wasn't that great. The Japanese and other countries were using relays back then to eliminate excessive current draw. It doesn't make sense to push 20 - 30 amps thru a #14/16 gauge wire (10 feet or more) that reaches from the battery source thru a control switch and on to the item. Same thing as using Amps guages during those times. Only asking for trouble. Add in the age factor of the vehicle and it makes for potential problems. Relays simply remove the current draw from the control switches and wiring (headlights, heater blower, wipers, etc) and apply the power directly to the item(s) thru a very short, heavy guage wire which will carry the load. Almost all new cars have numerous relays in their electrical systems for this purpose. The only alternative I can see for my old car is to completely re-wire it as opposed to installing relays. I would rather have the relays and take the load off the system.