Wires from coils

Hi all, 1979 st70,having trouble with blowing bulbs and fuses, the wires from the two coils have been cut and replaced with all black wires , I know which ones are the neutral light and switch, the wire from the points goes to the black wire on the harness, on the harness there is a pink, green, yellow, does anyone know where these connect at the coil end, thank you