Most of the Boat Builders/Owners installing imported equipment need the Installation inspected and signed of for International Warranty.
Equipment with International Warranty “failing” need to claim from the manufacturer.
Overland Vehicles with Heater, Air Conditioning, Solar Systems, Diesel Cooker...
Custom build Cars need the electrical system ‘sorted out” or replaced...
Custom build Motor Bikes needing a new/operational electrical system...
Power Cuts: Green Power - Solar or Wind, UPS and Generator...

Instrument connections like this...

Boat & Yacht Corrosion Control...

Galvanic—Stray Current—Mechanical...

Proper Drive Shaft Bonding to protect your valuable Underwater Metal...