Outback (2007) heated seats

I hope the more knowledgeable can help me, i'm not a spanner man but like a bit of investigation and DIY on bits i can cope with.

So, i recently replaced my old Forester with a tidy Outback S model, which is basic and that's OK.

Whilst clearing out the previous owners child's debris from under the front seats i see what must be the loom into the seats for heating? I know manufacturers often use a single loom regardless of the car specification so I'm hopeful with the appropriate bits from a scrappy i can activate seat heating. It occurs to me that may mean a relay/fuses, the switch and short looms to the empty plug/s under each seat and bingo........or not?

TIA for any input