Heat shrink, cable ties, conduit, loom and tape to finish your loom neatly.
The consumables are what make a wiring job last. Adhesive-lined heat shrink seals a crimp against moisture, split conduit and loom protect cable from chafe where it passes through a chassis or bulkhead, and cable ties keep the run supported so it is not hanging on its terminations.
Worth doing properly in the tropics, where humidity and salt air find their way into any joint left open.
