Wall mount unit, with wireless speakers

Hello everyone,

Looking for a little help,advice with a novice question here.

I would like to purchase and mount a wall mount Sirius receiver in a garage. Was hoping to mount four wireless speakers in the corners of the garage. Any help on what I will need to accomplish this for hardware, etc. beyond the receiver and the speakers?

Thanks for any help you can provide.

I can tell you what I'm doing for my motor home in order to have wireless speakers outside. I'm looking for a Sirius SXSD2 boombox and I will plug in a wireless sending unit into the headphone jack that will transmit to wireless speakers outside the bus.