After looking for several ways to go about replacing my Shaker 500 headunit in a 07 GT with a Clarion VX409 DVD/Ipod/CD player. The EASIEST way to do this is by purchasing a 'Peripheral FORDAH' wiring harness. This thing plugs directly into the factory wiring harness', there are three. Then you simply sauder or crimp the appropriate ends to the new units harness, such as the speaker wires, power, ground, remote amp turn on, etc. The harness also compensates for the 12V to 5V change for the factory amps powering the door subs thus illiminating the need for extra work. Took me about an hour and a half from total time to remove and install everything. The harness runs about 100 -120.00 from crutchfield or your favorite stereo store but you can get them off of ebay for about 50-75.00. I am not positive this will work with the Shaker 1000 but I'd bet it would. There will be some wires that you will not use, I think there were four left over. These are for rear entertainment controls for some SUV's.