I am taking a stab at installing my D2 that I just bought. I know this may be a stupid question, but please bear with me. I have a 2003 Ford Escape and I would like to know exactly how am I supposed to connect the Speed Signal Input? I have no idea where the Vehicle Injection Computer. So if someone could help me out that would be great. A picture would help if it is available.

if you have the radio with a subwoofer the wire is in the radio harness. its not the main radio harness but a second harness just with 2 wires or it my just have the 1 wire depending of the vehicle trim model. the color is gray with a black stripe.

or

pin 68 gray with black stripe on the 3.0l engine pcm which is mounted to the passenger firewall in the engine bay. the big black connector rigth under your windshield

or

pin 28 gray with black stripe on the 2.0l engine pcm

or

pin 3 gray with black on your cruise control module on the right side of the engine bay

Thank you! it ended up being the gray wire with the black stripe. I appreciate your help.