running power supply for indoor car shows

i hope this is the correct area to post this

For HIN and DUB we can't have batt's connected so have to run power from the wall to a dc converter power supply to run everything. my problem is how do i hook it up since most of my wiring has "rings" to hook up to the terminals? because i need to figure out a way to run the 4 gauge wire from the power supply to the other wiring (wiring for HU, 4gauge power for amp and the 10gauge wiring for the led's, which all use ring connectors) any help asap would be appreciated so i can get the proper configureation set up for the show in 3 weeks

thanks,