Toyota is good for prewiring things and just no installing them on more base model cars. I've been driving my uncle's 08 Tacoma waiting to get my Lancer back after hitting a deer. Some of the things I already knew on it are driving me crazy. Things like lack of cruise and lack of intermittent wipers. From the research I've done bother are literally plug and play. I just have to get the cruise switch and install it and get an intermittent wiper switch and swap it with the non intermittent.
Mitsubishi was even doing similar things in the 90's. My 94 Stealth did not come with fog lights but it was prewired for it. All I had to do was get some factory fogs, and the factory button and install them. Worked just like OEM.