i have a Logitech X-230 amp and no controller how can i run this amp without controller it works with a switch but i don't know where to add a switch

i have a logitech x-230 amp and no controller how can i run this amp without controller it works with a switch but i don't know where to add a switch
 

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According to the thread Logitech X-230 2.2 project

Operation:
plugging in the DB-9 with shorted pins 1 & 7 turns on the master power
satellite power switch off = grey shorted to black
satellite power switch on = LED + 1.9K in series between grey and black

IIUC, install a SPST switch across pin 1 and pin 7 of the DB9 connector can turn on/off the amplifier master power.
Install a SPDT switch across pin 6 and pin 8, shorted pin 6 to pin 8 will turn off the power for satellite speakers, connect a LED + 1.9kΩ resistor from pin 6 to pin 8 will turn on the power for satellite speakers.

Screenshot 2023-06-12 at 00-09-30 Free Online Schematic and Diagramming Tool DigiKey Electronics.png
 
Ok, you really have to say what you are doing or this will go in circles.

Let me ASSUME that you have just the sub and are trying to wire your own harness and non-original satellite units. I assume "keys" means switches? So you wired it that pin 1&7 are always shorted, no switch? And you wired it so that there is always an LED and resistor in series between 6&8? And satellite speakers are always on but NOT sub?
 
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