That's, um.....impressive. Must have taken forever to do. I had no idea that that cable was available in so many colours.
Just a couple of observations and questions.....
- Why does the supply line for the Redarc solar change colour?
- Why are there two wires unterminated (lower left of pic)?
- I hope you're going to cover that exposed positive terminal.
- I'm a little disappointed that you haven't matched the colour of heatshrink to some of the cables. Need to do again, I'm afraid.
Seriously, big effort, but I'd be just a little concerned that all those cables and terminations may be a little exposed under there.