My unit is a 2013 Cyclone 4100HD The surround souns is Sony, TV is Magnavox, and Satellite dish is automatic I believe Winegard. Direct Tv system. Thanks The surround sound is located over the microwave on the slide out and the Tv is over the fireplace making it difficult to run extra wires. However they have run red yellow and white RCA wires along with several speaker wires to the surround sound. Thanks
Current A/V equipment will almost certainly use the TOS Optical cable connections I linked to earlier.
If your Directv receiver is a DVR, you'll definitely want to connect the Directv receiver optical out to the surround sound optical in rather than just use the audio out from the TV. The DVR may introduce an audio sync problem when listening to the sound that goes from the satellite receiver to the TV and then to the surround sound. Using the optical link from the satellite receiver directly to the surround sound eliminates this problem.
If the rca a/v cable is already routing the TV audio out to the surround sound input, leave it there so you have it available when you watch over the air TV or cable. When you change video sources, you'll have to also select the corresponding audio source with the surround sound remote control.
Here's a generic diagram that may help.