Hot wire for power antenna

Does anyone know where the hot wire for a 73 911 power antenna is connected to? Is it the fuse box, if so which terminal, or did it pick up power somewhere else.?

Thanks for the help.

I think it just picks up the power at terminal 30 at the headlight switch (constant hot) Look at the fuse labels of the fuse box cover, if no antenna is listed then use the light switch.

Thanks Ed.