Couple of questions for you ALP experts :)

[Tman]

Amendolaro ,

i will try to help you : i will not get in color of the wires to avoid confusing more .

Basically you can power without problem many devices from one control switch AS LONG you
splice together the Positive of all devices . The negative , also called Ground can be taken anywhere
on the chassis.
It is very basic.
Along the positive wire you should place a fuse from 2 to 5 amps , just as an added safety .

Questions welcome.