Power door locks

Hello I bought a 1992 Silverado ext cab recently and it had an old alarm in it that didn't work so I had a friend remove it. My power locks worked fine with it in the truck but now that it is out no locks. I found where they tapped the wires under the drivers side dash speaker to run to the alarm for the locks, a white, blue, green, and yellow wire. At the box under the dash by the break pedal I have three wires plugged in to the box that run to the same harness under the speaker. Orange black stripe, a black, and a pink. All three have a tap into them with a cut wire. Any help with getting it back to its original set up would be much appreciated. Schematics for under the dash is really what I need. Thanks