How Do I Determine where my short is located?

It sounds like you have a 'parasitic drain' Yeah, the parts guys will sell you anything they can, sometimes I wonder if the get commissions. Anyway, there is a way to test for that. tenspeed knows exactly what the link is, I will try to find it in case tenspeed does not see this

It has to be a process of elimination if the drain isn't readily apparent...the glovebox light, trunk and hood courtesy lights are suspect too...by elimination, start pulling the fuses one at a time until the drain disappears~

I've bought these crazy "short detectors" and they are more trouble than they are worth~ did not help to find a short on the rear hatch of the volvo I had, took the next owner to disassemble the rear hatch hinges to find the short~

ttp://www.wikihow.com/Find-a-Parasitic-Battery-Drain...and a better one is "Ericthecarguy' He knows his stuff : http://www.youtube.com/watch?v=KF1gijj03_0

The easiest way to know is simply take the negative cable off the battery and use a test light or multi meter to see if there is power going from battery neg to ground. With car off, But those videos provide far more detailed information..or just take the negative cable off overnight and see what happens, a car clock draws 0.02 amps. Almost nothing. And an LED red security flashing light has a step down to 2 volts from a capacitor also at very low amperage

...most people struggle with the concept of Amperage, Eric the car guy seems to take it all in stride--

Glovebox light stuck on.

Courtesy light on the make-up visor left on.

David H is correct as usual, Fords spec. for parasitic draw is .050amps anything less is considered acceptable. But I like to see it less than or close to .020amps.