I have an axl Akita at20 amp and the jack on the amp got un plugged. I figured it out before but dont remember how. I have a green/yellow stripe that's 0 ohms to ground. And I have a black wire and a white wire. The jack is a std pc jack. I figure the green/y. Is the center leg to ground. On the back of the jack I see 1 leg labeled BL. And the other N. I'm guessing bl for black but my ac class was 35 years ago. How do I prove what goes where so it dont smoke?