As you well know from your reading, there are many opinions on this and I'm sure others would disagree... If your cars wiring is sound, insulation not crumbling, free of green corrosion leaching out at bulkhead connector other crimped connections and you have not added anything in the way of additional electrical loads, or a previous owner has not butchered the electrical system wiring, it's probably not necessary to do a bypass. I have always felt that the ammeter-alternator gauge tells a lot about what's going on with the electrical status of the car. You just need to take the time to inspect the pins in the bulkhead connector, replace as necessary and assure that the innards of the ammeter is sound and the connections to the terminals are clean and tight. I've been thru my 66 Charger throughly and have keep most everything stock with exception of installing electronic ignition, bright red LED tail lamps and Holley LED Retrobright headlamps. Cars were not meant to last as long as ours have, so you have to do things to insure all is proper and sound. I can understand why wiring changes or bypass would necessary if you have added things that have current draw that exceeds the design parameters of the cars system as it was designed. Just my opinion, but it's yours to do whatever makes you comfortable.
