Wireless router setup

[Yamanipanuchi]

I have a device that has a NIC and wireless adapter. Both interfaces who up with OPNSence. I am running into a dalema though. I want to set this device up so as the NIC is the WAN interface and the wireless adapter is the LAN interface. I have no way to initially connect to the device to program the wireless adapter.

I've searched around an have not been able to find how to do this.

In short I need to program the wireless interface via command line for the SSID to connect to it an finish up the configuration.

Anyone out there have any ideas?