This is what I use for a disconnect.I bought mine locally at a hi-lo shop for $4 per side.(you need 2)
https://cgi.ebay.com/ebaymotors/ANDERSON-STYLE-350A-BATTERY-QUICK-CONNECT-PLUG-SET-2AWG-_W0QQcmdZViewItemQQhashZitem1e639a8374QQitemZ130520089460QQptZRaceQ5fCarQ5fParts
https://cgi.ebay.com/ebaymotors/ANDERSON-STYLE-350A-BATTERY-QUICK-CONNECT-PLUG-SET-2AWG-_W0QQcmdZViewItemQQhashZitem1e639a8374QQitemZ130520089460QQptZRaceQ5fCarQ5fParts