This assumes the radius accounting is on your tac-plus server. And you will need to subsitute the local ip address for the interface in the original configuration.
set system authentication-order password
set system authentication-order tacplus
set system radius-server 10.10.10.10 accounting-port 1646
set system tacplus-server 10.10.10.10 port 49
set system tacplus-server 10.10.10.10 secret "$9$33eZnpBreW87V8X"
set system tacplus-server 10.10.10.10 source-address 10.10.10.1