muting the bose stereo

Hi

I have search high and low for an answer but wanted to call on some experience from others.

Basically I want to mute the bose system automatically from a circuit a have built, I understand that pin L on the stereo connector is the mute input.





What I would like to know is whether I simply just ground pin L to mute the system, then unground the same pin to unmute, just like aftermarket stereos?





Thanks





Antony