Locate the 25pr to the second Station Amphenol plug. 1. Punch down one end of a cross-connect wire to the Bk/Sl (tip) and Sl/Bk (ring) pairs. Connect the other end to the 4(tip) and 5(ring)screw-down pins of the Viking PA-2A. This is your Audio pair.
2. Using another pair of cross-connect wire, punch-down one end to the Yl/Bl (make) and Bl/Yl (common) pairs on the same 25pr block. Screw down the other end of the "Make" to PA amp screw-down pin 1, and the other end of the "common" to the PA amp screw-down pin 4 along with the "tip" of the audio pair. This is your control for paging.
3. The speaker wire is screwed-down on PA amp pins 3(+)and 4(-) or copper, white.
4. The Battery Feed switch must be in the OFF position. Plug in the power supply, adjust the Paging volume control.