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Page 79
9.3.2 Wiring the Left 300B Valve Base
You can wire the valve base from the top or the bottom. The following graphic uses the top view:
Connect the Black coming from the 1K Grid resistor on the tag strip wire to pin 3.
Connect the Red wire coming from the Left output transformer to pin 2.
Connect the Red wire coming from the Left DC-1 on the Filament Supply board to pin 4.
Connect the Black wire coming from the Left GND on the Filament Supply board and the Black
wire coming from the top tag on the tag strip to pin 1 (use 2 holes).
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