I have the base, non-pony package '05 and already have the Eleanor grille to go with my GT front and am ordering OEM GT fogs. If I got a wiring harness taken out of a GT, would that work to wire up my fogs?

 

The wiring should already be there, but you'll need to figure out the switch.

 

The wiring is NOT there on a V6 base model.
Period. The logic is not even in the SmartJunctionBox programming.
There have been so many write-ups on this I am going to have to
refer you to the 'search' feature of the Mustang Forum.
You will need:
1 fuse holder
1 fog light relay
1 GT headlight switch
14 Gage wire
2 9145 fog light plugs
convoluted tubing
ring terminal

Or just buy a harness off of eBay for $75.
The GT fog harness is integral to the headlight
harness and other things.
Even if you got all the wiring in place, the
SJB still does not have the logic it needs to
operate the fogs from the GT headlight switch.
So a GT fog light harness is a big No Go.

Believe you me, I have more of a handle on this than AudioNutz....
Maybe he knows what the 157dB is all about and what it takes to achieve this...

 

So this is what you're talking about?
http://cgi.ebay.com/ebaymotors/Musta...Q5fAccessories

 

You got it.
The price has come down....
Add the GT headlight switch and you are in busisness....

 

Sweet, I'm either gonna get an OEM one from AM or I might have a deal on one through the classifieds. 157 to the rescue! lol