Come on mate, that's easy to follow, red = power, black = negative. I made that to remind myself what to do for each tank because I'm a big dummy when it comes to wiring. Like I've posted elsewhere, I've got more blown boards then most guys have tanks due to learning the hard way!

If you don't want to use the junction block then solder the wires on top of the black and red on the board or switch, it doesn't matter. My little design let's you add multiple accessories to the power supply in an orderly manner.