Things you Find

Do the mad electric fix
Catalog
NO! Sorry to be so emphatic since I always appreciate your posts.
Taking some load off the bulkhead is a real improvement.
But that's not a great way to do it.
Two links in parallel means twice as long before they blow.
Increasing the route length to the main splice increases voltage drop.

Better to copy either of the factory methods used with higher output alternators.
1965 Bulkhead connectors (and a couple other years) have a better connector for the main feeds. But since WagonofDeath has '68. Lets stick with that.
The heavy black wire with a cast rubber seal at the connect is the alternator output.
The other bare wires clearly are soldered. Someone repaired or modified the wiring.
The heavy red wire is probably Battery output/charge wire. (MSD 6 also has a heavy red wire for its power)
I sometimes call the battery and alternator output wires 'feeds' because they supply power.
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