That's normal for older factory trailers. (Might still be the same now ) Fast and cheaper than real custom harnesses made by a competent company
Just use a method of your choice that is fully waterproof and well secured, and Robert's your relative. I prefer to solder and fully seal with liquid electrical tape, covered with commercial grade rubber splicing tapeand don't care about the ability to plug/unplug the connections. If I did want to do that, I would use Deutsch or similar connectors.
I am undecided on using split loom to protect the wiring. While it becomes sacrificial and protects the wire insulation from UV, it collects crap, and falls apart quickly.Better to buy good cable with quality insulation IMO.
Anyone know who makes good split loom ?
In automotive engine bays I use cloth wrap, like some OEMs do.
Among other things,it appears the insulation is failed where it goes through the grommit at the backing plate. Time for rewire with quality wire, grommets and connectors.
Look at the bright side. The crap quality of trailer wiring is what likely supplied kids their first experience wiring. Fixing the family travel trailer every couple years.One my memories bonding with dad.
