I don't have a clue why they say it mounts to the tranny pan, maybe so it's out of sight. The Locar still needs hooked up the the carb , to activate the kick down. And needs 12 volts postive to operate.
The only thing that gets hooked to the tranny is 1 wire. 12 volts + from whatever kickdown you use.
1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1980 CJ5 trail Jeep.
1989 YJ the CJ to YJ.