help with hooking amp up to factory deck in a 98 explorer

[explorerboy]

I have a 98 ford explorer sport. I'm trying to hook up an amp to the factory deck. I have the amp wired and ready to go, but I dont know where the remote turn on wire for the amp is. The deck is the dual media (cd-tape) deck... and I don't have a factory subwoofer.

TIA.