A question regarding the coils on an 82 CX650C and which input wire is positive....

This is a question regarding the coils on an 82 CX650C. The stock coils are marked TEC AS-82-TRI. Each coil has 3 wires. The spark plug wire and 2 wires coming off the harness. Of those 2 wires both coils have a black/white wire and the right has a blue wire and the left a yellow wire.. My question is which of the wires is the +positive wire.
Is it the black/white on each coil or the colored wires(right->blue, left->yellow)?

Thanks everyone.