Alpha 120A connections

Guys, newbie here; I’m setting up a quad x and trying to figure out the 120A Alpha connections. CubeOrange with Ardupilot carrier. Will use Mission Planner. The 120’s have a three wire connector (red, white, black) and a two wire with a three wire connector (white, black). T-Motor says the white, black wires are the throttle, but I don’t see a place on the carrier in which to plug them. Also, the connectors go in either way, which is the correct way?