Yes, Feets sent me a message with the correct numbers.

I looked them up again in the catalog. I also found the pic of the wires I bought.
000-540-36-05 is the the 4 mm wire. It has a thick insulation but the wire itself isn't that large. Mercedes used it on several cars.
If you want to go thicker, try 000-540-37-05 for a 6 mm wire. They show to be available in the parts system. Both wires show to fit the same plug.



I used the 4mm wire and it seemed big enough when I got it. The 6mm one is very expensive.