The common terminal on the 3 way switch at the end of the circuit connects to the black wire running to the hot terminal on the light.
It will likely be in a position to offer you with extra tools like conductive tape, screwdrivers, wire nuts, etc.
A 2-wire cable is used for the purpose of connecting the last switch to the light fixture.
Opt for linesman pliers as opposed to the ordinary slip-joint huge pliers when intending to twist wires.
In addition, this e-book provides practical recommendations for several various projects that you simply will be in a position to complete.
Leviton Four Way Switch Wiring Diagram Source: i.