There are 2 popular ways of doing cp wiring. One is cheaper and requires soldering...the other costs more and requires you to buy connectors to slide onto the spades of the micros.
The cheap way is to solder the ground wire to a switch and then daisy chain it to the next switch....scrape off some insulation...solder it on...and on to the next.
The more expensive way is to buy the terminal connectors and use thin enough wire that you can bare up the wire and fold it in half..then put it into the connector. You can also cut the wire, bare both ends...then twist them and put them into the connector. Again, you just daisy chain from ground to ground. This makes swapping out a micre pretty easy.