The two Motherboard power connectors for the AT power supply are labeled P8 & P9 with each of these connectors having 6 wires.
It is important to remember to keep the black ground wires on each connector next to each other when you plug it in.
Although it may be difficult to plug in incorrectly it has been done, and if done, wala, there goes a motherboard and a CPU, up in smoke.
P8, and P9 connected to motherboard.
P8, P9, Berg, and Molex connectors respectively.
