Are you ordering this from a dealer? I believe that's the only one that makes it. There should be instructions on how to install. If not the dealers shop should have them for you.
From 2005-2009, the only trunk release button Ford installed for the Mustang was on the key fob.
There is not you must use key fob or key to get into trunk
It may be inside the glove compartment.
The trunk release for a Dodge Stratus is to the left of the drivers seat when sitting in the driving position on the floor of the car just inside the drivers door. Pull the lever and you are in.
It is in the trunk... on the right side you should see a green circle behind the gas cap... pull it out it will release the gas cap..
there is no trunk release other than using your key goood luck
Robot Chicken - 2005 Junk in the Trunk 1-1 was released on: USA: 20 February 2005
Corwin's Quest - 2005 The Elephant's Trunk 1-7 was released on: USA: 31 August 2005
Dogfights - 2005 P-51 Mustang 2-11 was released on: USA: 4 December 2007
The lock and unlock switch for the doors unlocks the trunk too.Push the switch to the left and hold it.
Roadfly TV - 2005 2010 Ford Mustang GT - 5.36 was released on: USA: 9 July 2010
The 2005 - 2009 Mustang GT has 300HP.