sorry mate this setup is in my van as in caravan and no joints in the wiring of my jayco van where soldiered I went through the lot of them from trailer plug back through soldiered the wires in the trailer plug then fitted them back in to there positions whick also included a upgrade to a 12 pin plug so I only have one plug to contend with, not a trailer plug then Anderson plugs for this and that all in one plug nice and neat
As for my cruiser any wiring work I do on it, that all gets soldiered and heat shrink tube used, pain if you want to change anything but done to stand the test of time and the same on any cars or 4X4s that I do any electrical work on may not be the cheapest around but at least they donot play up in or out of water,mud etc even in salt water no corrosion