Seeking assistance: how to add dedicated "on" switch to subwoofer

[Dy500]

Hi all,
My Martin Logan Dynamo 500 subwoofer only has an "auto on" switch.
I would like to add a dedicated on switch.I have the schematic.
Thanks much

 

[rayma]

Can you post the schematic?

 

[Dy500]

Subwoofer Schematic

Thanks for your reply.
Certainly, please see attachment.