Is this possible to do? Planning on turning iMac into monitor

I’m planning on turning this 2006 24 inch iMac into a monitor for another computer and I’ve bought the LVDS controller board and it needs 12V power so I bought an adaptor to use the original iMac power supply by connecting the SATA power cable to a DC In Cable to power the controller board but i found out the inverter which is part of the display needs 24V of power separately and i don’t know how to give it power? So I was planning on possibly using the original motherboard of the iMac and connecting it to the inverter which is how it was powered in the original computer through a cable. Could I do that? Use the controller board to control the LVDS signal but have the original iMac motherboard power the backlights through the same cable it did originally in the computer? I would have to press the power button and all so the computer thinks it’s on and powers the sata power and inverter