O.M.G. I don't think there are words for the level of unholiness that is stuffed in that box now
but I'll try anyway.
I pulled some slack out of some existing Al wire in the house and cut off about 6 inches, enough for two jumper wires to git er dun
The panel wiring is 10awg Al. There are 2 daisychain fixtures wired with 10awg Al and 1 daisychain wired with 12awg Cu. There is a wall switch for the fixture that hangs off this box that is wired 10awg Al. The fixture itself is 3 separate lights (9 wires) of 14awg stranded Cu.
Here goes...
panel hot 10awg Al + 2 daisychain fixture hot 10awg Al + 1 wall switch send 10awg Al + jumper hot 10awg Al = Scotchlok B
panel neutral 10awg Al + 2 daisychain fixture neutral 10awg Al + jumper neutral 10awg Al = Scotchlok B
panel ground 10awg Al + 2 daisychain fixture ground 10awg Al + jumper ground 10awg Al = Scotchlok G
jumper ground 10awg Al + daisychain fixture ground 12awg Cu + this fixture ground 12awg Cu = Alumiconn
jumper hot 10awg Al + daisychain fixture hot 12awg Cu = Alumiconn
jumper neutral 10awg Al + daisychain fixture neutral 12awg Cu + this fixture neutral jumper 12awg Cu = Alumiconn
wall switch return 10awg Al + this fixture hot jumper 12awg Cu = Alumiconn
this fixture hot jumper 12awg Cu + fixture assembly hot 14awg stranded Cu = Scotchlok R
this fixture neutral jumper 12awg Cu + fixture assembly neutral 14awg stranded Cu = Scotchlok R
Unbelievable... I truly pity the next guy.