Running Lights Wiring Question

[greateastern]

I belive it is 5 blade i'm at work now but will check it out tonight. I started with a low voltage at the bow 4-6 volts dc now I made worse, no voltage I think it was when i cut the looped black wire. like i said four of the six wires are marked with factory lable two say bow two say stern which are the 12v dc and two i think have to work the switch some how?
Thanks,