VSS Wire/wiring diagram

Hey everyone I have a 93 B2600i 2wd 5 speed. I am putting all new gauges in my custom sheet metal dash but need to find the vss (variable speed sensor) wire to hook up my speedo. I have been told that the B2600i's have one but I haven't found a decent digram to find it... If anyone could give me a diagram or a wire color and location I would greatly appreciate it!
Thanks in advance!

Ok, best I can find in my Hyanes manual - there should be a Green w/Red stripe wire that runs from the VSP switch in the transmission thru the firewall connector and up to the Speed Sensor in the factory combination instrument cluster. From what I can read in the wiring diagram this wire is a variable ground wire and NOT a positive wire. Hope this helps.

Thanks Immortal1... anyone have a diagram they can post possibly just in case this falls through? I dont have the truck here so i cant just go out and look