DIY Cruise Control on 07-08 Yaris (step by step)

[Taboolie]

From reading the posts in this thread, it appears as though this does indeed work however I'm curious why the Rostra kit has is so complex in comparison?

I mean really, if it was just as easy as running one wire through the firewall why would they bother with all of the other ones?

Is it that the Rostra one supports many models & years and this DIY trick is only for the 07 and 08?

Also, I'm not sure if anyone answered this already, but would there be any reason I couldn't purchase an OEM cruise stalk and use the wires from this with this method?

If it's safe and works then I'd rather spend $25 on the OEM stalk and a couple of bucks on some wire then $250-500 for an aftermarket kit.

Thanks