On October 21, 2016 at 17:10, punter16 said...
Option 2 is what we see but it isn't immediately obvious if it goes directly to a VC. Because we didn't see 2 X 16/4s going into any VCs, we looked for an autoformer that might be hidden in one of the crawl spaces but we can't find it. Unfortunately the attic spaces are very limited so it's difficult to track where the wires go. This one is turning quickly into a paid "Discovery" return visit prior to bidding.
Thanks for the info.
Look where the one 16/4 comes out of the wall to the amp.. I have seen people wire nut all of the 16/4s together to a single 16/4 to the amp and then shove the whole mess back into the wall behind the plate.