I have the black/white wire connected to the GM red wire, the red/white wire connected to the GM white wire. I have the "fat" white Zuk wire connected to the post on the back of GM altenator.
My battery dash light stays on when running and I am only getting a bit over 12 volts at the battery and with lights on its 11v and change.
Is it me or is this place dead, granted I have been gone awhile from here, so I dont know.
Here is what I found, the stock zuk red/white was dead. That would explain why the last 2 zuk alts. did not work, not the 2 Gm alts I tried to use this week. I ended up going with the single wire GM alt, kickin azz now.