The relay must have a 12-volt coil, not 240v or 120v. The original OEM part is linked in the header of this guide.

Screw the relay wires (usually yellow/white) to the relay coil contacts.

Install the AC mains feed into the lower terminals where they fit, while also adding the AC board supply (red/black) small wires on TOP of the AC mains wires (between screw & lug, not between lug & relay).

Finally, install the AC output (J1772 cable) lines on the upper terminals where they fit, while also adding the relay sense wires (usually orange and blue) on top of the lugs similar to the AC supply wires.