Jandy/Zodiac RS All Button - Extra Wires on Red 4 pin connector

[HofstraJet]

My sister just got a new house and I'm helping upgrade her Jandy/Zodiac RS All Button to an iAquaLink. The current setup has a spa side switch, but it appears that it may be connected to the red 4 pin connector instead of the brown terminal bar as the connector to the brown terminal bar was disconnected (see attached). The only control I found in the house was the RS All Button so I'm thinking that the extra wires on the 4 pin are for the spa side switch (note that I have not yet confirmed if it even works). Thoughts?

Thanks!

 

[JasonLion]

The left most connector in the photo (red?) is the communications port. All of the wired remotes get connected to there. If you have a wireless remote, an antenna module will also connect to there. A few of the Jandy brand heaters also get wired to there.

 

[HofstraJet]

The left most connector in the photo (red?) is the communications port. All of the wired remotes get connected to there. If you have a wireless remote, an antenna module will also connect to there. A few of the Jandy brand heaters also get wired to there.

That's why it is confusing. There are no other remotes or J boxes I could find so the extra wires are a mystery. Didn't know about the heater being a possibility. I will check mine as coincidentally we both have the same heater (Laars LX400). Thanks!