Where did you get a manual from?
We'll be more than glad to help you! Couple of options, 1. give us a call at our shop 562-981-6800 during our normal business hours and we can give you quick pointers on how to check to see if it's connected or not; it's real easy. 2.) Check out this link:
Though you aren't purchasing a cruise control, it will give details on how to connect it to the back of your speedometer, which coincidentally may answer how you check to see if it's connected :)
Hope this is of help!
smartgurl, aka Rachel of SMART MADNESS