Wiring output transformer

Hi
I started to restore a hd130 reverb head .
Someone replaced the output transformer with a non original.
Bought a better replacement.

I connected the primary side but i,m a bit confused about the secondary side

I got yellow 8ohm wich should be connected to the impedance switch

I got green 4 ohm wich should be connected to the lug on the opposite side
Of the impedance switch.

Then i got one lug left on the impedance switch wich should be connected to the speaker output jack

But then i got one purple wire left from the pre amp board and also a black one from the secondary side of the output tranny.

Where should these go?