I just put in a pioneer deh-p3600 deck in my 94 accord lx 4dr. I spliced the wiring harnesses installed the deck. However, the purple wire (the power antenna wire) is disconnected as I do not know where to plug it in.

Can anyone tell me what I need to connect to the antenna wire?

 

are you talking about the cars antenna wire? if its the car, you need to hook it up to the blue/white wire coming out of the radio. this wire gives 12v when the radio is on.