No stereo controls.
Left side is your on/off button for the cruise. If your cruise will work, at least with the electrical, you should see a green indicator on your dash when you push this. The right side buttons: small round one is 'cancel' and larger one is 'resume/accel' on the top and 'set/coast' on the bottom. My '92 had a bad set button that would stick because it was missing the spring or broken or something. I perfected pushing set, and then pushing slightly on resume to get it to work.
Other thing to remember is that if you are used to cruise on newer vehicles, my experience with mine was that there was a little bit of a lag between setting the speed and having it take over and holding. So if yours actually works, be patient with it to test it out. Push the set, then take your foot off the gas, and then it will pick up a half second later.