You could install a negative buss bar in the area, then install the negatives to that. It makes for a cleaner install and easier to service. Abyc don allow more than 3 wires on ant terminal anyway.
Show is a pic of the taken apart mess you got going on. Chokes aren’t to awful hard to set up, just a tad of fine tuning sometimes depending on the weather in your area.
After three posts you can put up pictures of the area in question. Any post is fine. Let us see what you are trying to figure out. And don't fill the boat with water, very hard on the hull and trailer.
Shower sumps : Some have a switch, some don't. I'm thinking its just for the head itself to pump the water from the lake. Unless it's a manual pump set up.
Sure, leave it on when you are there. Listen for the pump. If it kicks in once in a while when nobody is using it, you have a leak someplace. If it doesn't it's good. Still leave it off when not at the boat.
I just make sure they are charged fully in the fall then unhook the grounds and leave them in the boat. In the spring I hook them up and start the boat up. Usually get 5-6 years before replacement, but when they get that old, they still work, I just replace them for the reason they are getting...
Do not tighten the set screw to tight! Just snug it up and back it off a real tiny bit. If too loose, shifting will be impossible to adjust, to tight and the cable will bind.
I've used the new repair deal on a few, they make them for alphas also. You cut out the face of the upper ring. To me it's much easier and access is good. It comes with everything shown...
