30, 41, 46, 50 amp alternators? Yeah RIGHT
Years ago, back in 1976, I fried my bulkhead connector and underdash wiring when the radio was played way too long before an hour's drive home. Back then, wiring was just a junkyard away. But I did buy 8 GA wire to jump between the alternator and battery relay post which shunted most of the current away from the bulkhead connections. No problems since.
When I restored my '68's engine compartment, I was advised by the company doing my restoration work that Battery Cables USA was the place to go to get solid wiring.
Battery Cables - Custom Made Battery Cables
They did a wonderful job adding new cables and ground straps to everything. The new paint was thick enough to make grounding less reliable, so we ran grounding straps to key components. Its hard to see, but here are shots of the wiring as it stands now. The dual fans are being fed directly from the alternator output and will be controlled by separate sensors.