[TenTec] Question on AirPax Hookup

[OTAKEBI at aol.com]

Got an AirPax breaker today for my Rig from Wards Marine.
Have two install question.
The breaker has two connectors in the back.
One says Line the other says 2.
I want to say that the wire from the power supply goes to line and that the 
wire going to the radio goes to 2.
Am I correct?
Want to make sure before I do anything.
Better safe and all that!!!
Also, do you guys use like a number 6-32 screw to make the connection to the 
back of the AirPax?
Seems to me that would be a better way to go instead of solder.
Thanks for any information,
Dan N4VET