Maybe I wasn't clear. The truck never had cruise control, nor did the window sticker say it did. I researched the truck on the official Toyota site, where it said (and still says) that the regular cab 4 x 4 V8 has cruise control standard. I went to the dealer, where the official brochure says that cruise is standard. So I told him I wanted one. He found the truck and four days later it came in, without cruise. He told me he had no idea why this occurred and that I could back out of the deal. The truck is perfect otherwise, so I told him to give me $500 back, thinking that I could add cruise as an aftermarket unit.

No aftermarket cruise exists, at least not that I can find. It appears to me that all of the wiring is there to simply add a cruise switch (and maybe a different stop light switch) and have cruise. I know it has been done on first generation Priuses.