Alternator Upgrade and Bulkhead Disconnect

What is your opinion of not using the bulkhead connector and a straight through to the Inside?
Also do you use the Ammeter wires for the Voltage gauge?

Drill straight thru the bulkhead for the 2 ammeter wire connections this eliminates those high current bulkhead connections.Push a higher gauge wire thru the drilled
holes directly wire to the gauge. This fixes major problem and still locks factory.