What I understand the wire plus harness is around 530.. and the sportster keys are another 36 dollars and they said you should be able to use the controls it comes with step by step instructions of which they say takes around 9 hours so if I have anymore wiring problems thats probably whay I will do.
I beleive efi models need another part other than the harness
I just installed my new right hand control and all works well although its different than the original supposedly improved version you have to push pretty firm on the buttons. they should come over and push the buttons for you for the price they charge! lol
Im going to install the button on the starter when I get it for backup