After plenty of $$$’s I got my corroded LR3 sorted out. TCCM wiring you know the song and dance.

Now that I have a running moving LR3, I ask you this.

What can I do to future proof and keep
this LR3 from experiencing wiring continuity electrical hell again?

I usually keep my 2018 in the garage, but I’m afraid the LR3 needs to live inside even though this is kind or ridiculous. Concerns are corrosion coming back again.

 

As I do other services on my LR3, I've been using contact cleaner, and silicone dielectric grease on all interconnects, and nonconductive silicone spray for wire looms. Doesn't fix what's already been damaged, but I'm hoping NASA spec at least helps keep things from degrading.

 

Start by ensuring all water ingress points are addressed. Do regular checks on that. Some things I also do, or have done:

Added dielectric grease on some connectors. Added extra plastic conduit/shielding and electrical tape on exterior wiring/connectors. Every year I spray the steel components underneath with BOESHIELD, an anti-corrossion coating.

I'm sure you'll hear some other ideas...