Hello Alan,

Alan>>I know I am having noise problems cause when my motor initially starts, its put reverb back into my whole design but maybe after 1 sec it goes down and it works. This is why I want to somehow isolate the motor ground from the rest of my design to help "clean up" the remaining part.<<

Put 2 diodes opposing across the Positive and negative of the motor... That will quite the noise down considerably. The diodes will help take care of the "spikes" and noise of the motor. If you are using a Mosfet, it will greatly reduce the heat/power needed by the Mosfet.

Dwayne