I have an idea.......help us help you. Your question is far too general , lacks informative details and is poorly composed. Slow down your typing and read your post before you click on "submit reply". If it comes across odd to you, imagine how it appears to us. Its a matter of perception.
A poorly thought out incomplete question will result in incomplete or no answers at all.
Which wire did you find...which Z model....which engine...any modifications...etc......?
Please don't take this as a personal attack...but as constructive criticism to help you move ahead more quickly....