VOLVO VNL630 switch wiring

Hello
I own a Volvo VNL630 D12, 2005. Recently I've installed two switches in the truck one for the electrical dump valve on the trailer and the other for the front lifting axle on the trailer (flatbed trailer).
Everything works good, the only issue i have is that the switches are not illuminated when you turn your lights. I was told that that is hard to be done, that all goes thru the ECM. I compared with other switches and saw the wire 141A have the current for illuminating the switch. Can i take two wires from another switch socket to my switches?
Does someone have the schematics for the switches, wiring diagram, meaning the pins numbers?
One switch is an regular volvo AUX switch and the other is same like the air dump suspension switch, or the sliding fifth wheel switch, withe the little protection before you turn on.
And second question is
I saw that when other switches turn on a little yellow led turns on as well (separated from the illuminating dash board) , mine doesn't work. what i need to connect to solve this?

Thanks for any input !!!