THE BASIC PRINCIPLES OF HTTPS://WWW.BCABLES.COM/

but i cant get to diagnose the vehicle, i dont Believe the method as noticed my car or truck, i tried ignition & engine jogging, & no.    d.   Check out your car compatibility.   This tends to work on BMW automobiles built upto March 2007.   This could not work on later autos as mentioned from the listing.No warranty of any variety implied