Bud this is the plug that hooks into the throttle position switch plug which
is supposed to be mounted on your air intake.  If you look at the picture
24-150 you will see the other plug right in that picture (to the left).
You should be able to feel the switch under the throttle body and then try to
trace out the wire to find the plug.  If you need a new switch (maybe they
broke the wire off and just didn't tell you), I have these new for $62.
Hope this helps you.

Thanks,
Ken Wilford
http://www.vanagain.com
John 3:16
Phone: (856)-765-1583
Shop:   (856)-327-0027
Fax:     (856)-327-2242