No Power, need help asap!

Okay so i was doing work on my 1992 ford bronco, got all the mechanical work done and while re attatching wires from my new door, something must have happened and i have no power to my speedometer or my DEH P4000UB. i have run a test light to the hot wires coming from the car itself, and the wiring harness. i even did a straight hot wire from a 12 volt source to the back of the head unit and i got a bit of power to it.

What is the problem here? i have tried re connecting wires and making sure none of them short out when i turn the power on, ive replaced all the fuses in the entire car and even in the back of the unit itself.

HELP MEEE!