the Aussie V6 loom has alternator feed to ignition switch (RHS of engine bay thru firewall), across interior, then out the firewall to battery at front LHS.
The Aussie 4cyl loom does not have RHS feed to ignition switch.
I have intimate knowledge here. I painstakingly fixed a loom for 6 dial wiring, only to discover it had come from a 4cyl XL, not V6. Useless to me.
The wiring diagram for the V6 shows a alternator feed across front of car to battery, but 2 out of 2 examples I had did not have this feed.
That said , I'm sure a decent (old) electrician could sort something out for you.
whooligan makes a valid point. Wiring will melt together before you smell it .... or see the flames.
Then it is too late.
Ever tried to separate a melted harness?