vss wiring HELP!!!!!!

I am putting a 89 L98 in a 91 RS V6 car and here in lies the problem the engine harness is a automatic for a 89 and dosent have a vss wiring in it and the car I'm putting it in requires it for the speedo. I have a pigtail for the vss it has two wires coming out of it and they lead into the back of the engine harness on a different car but someone has already cut alot of wires off of it so I can't use the whole harness just the pigtail for the vss. So how can I hook up a vss in a 89 harness that was an auto and I'm going to a stick? Any info on this would be greatly appreaciated since this is holding my project up.
Thanks in advance
Bryan