Time to actually sort the upper cabin wiring out now, get rid of the birds nest thats accumulating and make it easier to remove/refit the upper cabin too.
Firstly, need to count ALL the cables that are necessary for all the lamps.
ok so we can make sure all but one of the negative leads link together, so that halves the number total in one easy sweep. Its easier to solder the earth leads together up in the upper cabin, that do so inside the hull, thats just a waste of cable.
So now we have a nice total of the wires, so to source a suitable connector. It will have to take a bit of handling, be easy to open and access if a cable breaks, have solder terminals [not screw], be of reasonable price in so much as you dont have to go out and buy a pack of 10.
I have used a 9 pin chassis connector, used in computing cables, they have a metal outer case, so will take a few knocks and the odd clout. it has soler terminals, can be screwed down to the deck and the other half of the connector comes with a clip together outer shroud to protect the wires from harm. readily available from Maplins and sold singly.
The only wires that do run seperate earth system is for the radar unit, as this only uses 3v, as all the rest is running 12v, so preferred to run seperately. The radar unit also has its own battery pack [see pic] this I mounted on the top of the electrical cover, purely for ease of replacement of the batteries, without having to haul the lot off, purely for a couple of "AA's". these test batteries will be replaced with some rechargeable one for longer use.
The main cable run from the stern of the upper cabin was routed from the main mast area, as this is where the majority of the cables drop down anyway, a few "joined the pack" as the harness runs past the rear cabin wall, so the searchlights and forward spot lamp wires drop donw here, rather than route down the front screen pillars. I ahve also left a couple of spare wires up there, as these will supply power to the flying bridge warning lamps and also for the roof instrument panel, which runs the full width of the interior cabin, [inside] above the internal steering position.
Its much easier to run all the wires in now and then wrap the cables in "spiral wrap", than try and add ones later.



The switches have also now been added to control some of the wiring that has been installed. The "pencil mark" is to denote the outer access line of the access hatch, so i dont put a switch where I cant get at !



These last three pics show the flying bridge controls and the inner "roof panel" I am yet to construct and then "wire up".
Yes, the forward inner sterering position, radio panel and navigation units will have lights/power too, but once i get to the insides again, its all in the pipe line yet.