Audio Systems: Isuzu trooper wiring, power antenna, isuzu trooper

Question
Hi Kelly...I have a 91 Isuzu trooper with an aftermkt stereo. The stereo works, but I cant find the blue antenna wire in the factory harness! Black,red,yell.,grnd.& blue are at the stereo, but NOT from the car? blue is missing...haaaalp!![thnx]  

Answer
I seem to remember that vehicle having a weird power antenna relay setup. I don't have a diagram for that brand, sorry.
Does it have OEM amps you are trying to turn on, or just the power antenna?

You never sent me more info, how was I supposed to help you more? The bad feedback really was the icing on the cake.