How do I replace a drivers side mirror assembly on a BA Falcon XR8?

One is faster. Have a read

Ford Falcon (BA) - Wikipedia

https://en.wikipedia.org > wiki > Ford_Falcon_(BA)
The Ford Falcon (BA) is a full-sized car produced by Ford Australia from 2002 to 2005. It was the second significantly re-engineered iteration of the sixth ...
Engine: 4.0 L Barra 182 I6 (petrol); 4.0 L Barra ...
Transmission: 4-speed automatic; 5-speed ma...
Curb weight: 1,620 kg (3,570 lb)-1,740 kg ...
Length: 4,916 mm (193.5 in)-5,053 mm (198.9 ...

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  Ford Falcon (FG) - Wikipedia

  https://en.wikipedia.org > wiki > Ford_Falcon_(FG)
  The Ford Falcon (FG) is a full-sized car that was produced by Ford Australia from 2008 to 2014. It was the first iteration of the seventh and last ...
  Engine: Inline-four: 2.0 L Ecoboost (2012-201...‎
  Curb weight: 1,704 kg (3,757 lb) (XT)
  Transmission: 4-speed M93LE automatic ...
  Length: 4,955 mm (195.1 in) (XT)

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ba xr6 vs. fg xr6 - Australian Ford Forums

http://www.fordforums.com.au > ... > The Pub
Nov 18, 2013 · 23 posts · 18 authors
The FG will win. No contest. FGs are a lot quicker than BAs, your modifications won't matter and the fact that his is tuned doesn't help your ...

Ford Falcon BA to FG 5 most common repairs - AutoGuru

https://www.autoguru.com.au > car-advice > articles > f...
Apr 14, 2021 - Thinking about purchasing a BA to FG Ford Falcon, or interested about their common problems? AutoGuru uses its repair data to list the 5 ..

Hello, Louise -

Contact local auto salvage yards. One of more of them may have wrecked white 2004 Falcon Futuras and will remove and sell you a left hand side mirror.

Best wishes.

If you go to the Ford Falcon Forum and ask there politely I am sure people will jump in to help you. Here is the link....

fordforums com au

You have to remove the door panel. This takes special tools, once removed, you have to work around or remove the window frame etc.

Remove mirror mount cover assembly.
Remove inside door handle cup (22634).
Remove door lock control bezel.
Remove window control bezel.
Remove interior lamp lens.
Remove screw from interior lamp assembly body.
Remove screw from window control bezel opening.
Disconnect mirror, lock switches and memory seat on driver side from bezels and wire harness.
Disconnect window switches from window bezel and wire harness.
Lift front door trim panel (23942) vertically, out of weatherstrip and over lock rod.
Disconnect interior lamp (13776) from wire harness.
Remove front and rear door trim retention hooks into door inner panel.
To install, reverse Removal procedure, paying special attention when inserting inner door trim into weatherstrip. Rock inner door trim into weatherstrip and push downward until lower trim belt character ditch lines up with score mark on inner door panel.

Whatever it is is being oil starved. Need to change to heavier oil.

You need to remove the internal door panel, then you can see the screw to remove the side mirror. Sometime you need to remove the glass before you can reach the screw.

you got to take the door panel off to get to the mirror bolts and wirring i

If you remove the door panel, you'll see the screws that hold the mirror on. Remove them and the mirror will come right off.