Vintage Pignose 7-100R HELP

[casperssoul]

I need help with a vintage pignose 7-100 r. I have worked with it enough to get sound out of it. When I received it the batteries has destroyed the majority of the existing wiring for the input & power switch/vol knob. The battery pack has been removed and would love to just leave it as a plug in amp as I do not care about the battery power nor do I want to corrode the repaired solder joints. I have photos i can supply.. I have the schematic as well, although, it confuses me, I have done guitar restores in the past

Red wire i believe was originally the battery positve.
http://s92.photobucket.com/user/evon_ishot/media/WP_20140626_0042014062716143220140627161622.jpg.html

Blue wire shows as a ground by way of volt meter.
http://s92.photobucket.com/user/evon_ishot/media/WP_20140626_0042014062716143220140627161726.jpg.html

Black wire shows as a ground by way of volt meter. Which i believe to be oringally battery ground..
http://s92.photobucket.com/user/evon_ishot/media/WP_20140626_0052014062716182020140627161948.jpg.html

This is my power switch/input side as i recieved it..
http://s92.photobucket.com/user/evon_ishot/media/WP_20140626_006.jpg.html


Where do these wires go!? If I use black to the top of input that is empty but has old solder on it in photo and twist the blue and red together I get sound.. although it is very low and very fuzzy..