What are these wires?

Have the back seat out due to changing shocks and I found two wires with black plugs on them taped up doing nothing. Also noticed a blank over a hole for a speaker under the parcel shelf-are they wires for the factory option sub? One plug has a single black/red wire and runs from passenger side,the other plug had 2 wires-white/red and seems to run from drivers side.

Makes sense Sean

Speaker cables would normally be black and red

And in a good car install the speaker cables would always run the opposite side to the power cables to ensure theres no interference

Very rare for speaker cables to be black and red in fact i have never seen it on factory wiring.
the 2 core could be for sub white / red, the other one could be for rear window wash or any number of other things?