When I installed the wiring in my Scamp
I used 2 and 4 conductor cables of the proper size and ran both power and ground to each device so that the wires stayed neater.
Also they are a little better protected.
Labeling is a good idea as well since although I remember absolutely every thing I do ...........well you get the idea.
I bought wire with white insulation and you can write on it if you want to.
What I bought was sold
as speaker wire and is available on Amazon in 14 and 16 gauge. I used 16 and fused accordingly since my trailer is all LED.
The wiring to the Refrigerator
was of course heavier as was the Romex run to the outlets which I installed everywhere and now wish I had installed more!
I installed barrier terminal strips behind the converter and brought all of the circuits there along with a grounding buss mounted next to that. I also brought all of the seven wires from the trailer 7 pin plug to a strip here so that troubleshooting the electrical
could be done from a central spot. That includes the brake wiring from the plug and to each brake, tail and running lights, turn signals and reversing lights.
The main trailer power from the plug is fused and tied into the battery
via the first 30 amp circuit (fused in the converter) in the system.
The power from the trailer is protected with a 30 amp circuit breaker and has a cutoff relay to kill power when the engine is not running.
If you check my thread on rebuilding the Scamp
I also added power meters for both AC and DC so I would know what is happening electrically.