If I wanted to make the cruise control functional on my car, I have gleaned that I would need the steering wheel with buttons on it, and a different stalk unit with the pass through connectors for said buttons? (assuming my car didn't originally have cruise control and the button to switch it or the speed limiter on (which does work) was added randomly by a previous owner?) If this is the case, why are there NO Lag 2 steering wheels on eBay with the buttons? Surely cruise can't have been that rare an option?!