Re: IBZ USA C1 - Single coil wiring?
The way I do it: I extend the short black wires. I use a multimeter set to resistance (ohm) The short black that has connection with red, I extend with a black wire, the one that connects with green I use a white wire. Then you have the DiMarzio color code. For a single coil wiring there is two options, depends on the wiring of the pickup it's going to be in parallell mode. (neck and middle for instance) Anyway you need to solder together white & red. Then connect green to ground and black to hot. If this is out of phase together with another pickup, simply switch the green and black.
One more thing you need to be sure of is that the magnet poles need to be the other pole than the adjacent pickup.