I didn't want to start a new thread for this question.
To power my sub I am planning to run a wire to the unused heated seat fuse in the drivers side fuse box. The sub I am getting has a 15A fuse, as does the heated seat circuit so it should provide enough power.
My question: do I need a relay?
I have been doing research for about 2 hours now and can't seem to find this information. What I have found are that subaru relays are $34 and I can't find any kind of aftermarket relay that would work for a cheaper price.