A "slamming" website did a hatchet job on this cab removal (attached pictures) but there is enough remaining to give you a clue.

Also Step 5
http://devestechnet.com/Home/ADWiringSystem

The regulator wiring can be removed but the regulator itself can remain to cover the holes in the firewall. Also there is a battery connection that may be useful. Some alternators have a "sense" connection that can be used to compensate for voltage drop.
Attachments
Firewall Passenger.jpg (97.18 KB, 82 downloads)
Firewall Driver.jpg (98.08 KB, 84 downloads)

Last edited by buoymaker; 10/26/2022 11:56 PM.
"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."