Battery becoming very hot
Alternator feed is what I'm calling heavy black wire that carries the alternator output to the main junction.
Please confirm the heavy black wire is the only one attached to the output stud.
See if you can find the other end of this black wire.
It should be the only heavy black wire going into the bulkhead connector on the firewall; but something could have been altered.
Black arrow show where the alternator output wire originally connected on the bulkhead.
Blue and red arrow shows where the battery feed wire originally connected on the bulkhead. (The fusible link will probably be blue)
It wouldn't surprise me if you find additional wire spliced into the battery feed, but lets see.
Alternator feed is what I'm calling heavy black wire that carries the alternator output to the main junction.
Please confirm the heavy black wire is the only one attached to the output stud.
See if you can find the other end of this black wire.
It should be the only heavy black wire going into the bulkhead connector on the firewall; but something could have been altered.
Black arrow show where the alternator output wire originally connected on the bulkhead.
Blue and red arrow shows where the battery feed wire originally connected on the bulkhead. (The fusible link will probably be blue)
It wouldn't surprise me if you find additional wire spliced into the battery feed, but lets see.