I have a 1994 2.5L with manual transmission. I decided to add a cruise control to my Jeep for those long highway drives. To me, it is worth every penny I spent on it.
I purchased my unit from The Cruise Control Store (Automobile Cruise Controls Kits System | The Cruise Control Store
). However, I could not find it on their web page. I had to call and talk with them directly (800-343-1382). I think I paid around $225 or so for it.
You have options to select from.
First, they may want to sell you disconnect switches for the brake and for the clutch. Realistically, you only need the brake switch. Just remember that if you are driving with the cruise control engaged and need to downshift, tap the brake first. Otherwise, you will experience some serious rev. By only getting the brake switch, you save having to fabricate some kind of bracket for the clutch for the switch to hang off of.
Second, you are not limited to just a push-button control box. I was able to get turn-signal / high-low beam toggle lever that had the cruise control on it. This is a much cleaner install and fairly intuitive when you drive.
Their web page lists a number of "installers." The shop I called said they would install it for $150. I figured that was worth paying to conserve on my cussing inventory. About 2 hours of install time, it was done.
If you happen to live near one of the installer shops listed, give them a call first. They may have just what you need in stock... and since these things are in such high demand, they might be willing to part with them at a discount.
Good luck and happy cruising!