So if my head unit only has one set of RCA outs and its for a subwoofer im screwed? Or can i use them with a splitter? That diagram did help though, thank you.

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'97 xlt 2wd, regular cab, 4banger, auto.
Mods: 8k HIDs, clear corners with LEDs, 06+ tails modded to have 3 bulbs, third brake blinker mod with LEDs, billet grille, 4x4 valance, factory fog brackets, replica factory lights, airbox silencers removed, roll pan, 17" mustang rims with spacers, 5/7 drop, kenwood double din ddx318, alpine type-s 5x7, sony xplod 4ch, LED dome light, LED glove box light , 01 white face expo cluster and silver HVAC both LED, OHC...and more.