took the c5 to the road they had a look and the wiper stalk /switch no good got a secondhand one but only come with three stalks not 4 q. is this just a standard set up two stalk/swith that fits all and you add cruise and radio control stalks ??? looks like i got the answer , the plastic surround is a four stalk set up but the electro board is only for a three on the back of the unit should have a red , grey, and blue cable plug in if/when i get car back ,it will be like having a new car still not put 1000 miles on car i've had since july