I may be replacing my gen head. The one that was on my machine had black colored wires coming out of the head. The one I am looking at has white wires. Is there a difference and should I be concerned? The potential gen head may have had its output leads swapped around on TB3. Is there a way to trace or determine which wire is which? I have the schematic and can follow that, but seems like I have 12 wires coming from the head that all look exactly the same.