Using unused taps for CFB

[cogitech]

I've read that it is possible to use (for example) my 8ohm tap for speaker connection and a spare tap (I have both 4ohm and 16ohm available) for CFB. 16ohm would give me more CFB and 4ohm would give me less.

How do I wire this?

Black (0 ohm) and green (8ohm) to proper speaker terminals?

Orange (16 ohm) to CFB terminal ?

But what else gets connected to CFB terminal? Ground? To negative speaker terminal?

 

[cogitech]

My "gut" tells me to do this:

..but I don't trust my "gut" when it comes to this stuff.

 

[cogitech]

I've basically given up on the sound of CFB in my amp so I won't be pursuing this any further.