Really easy install!! Iv don't it on all 4 bimmers.... Interior motion sensor takes 7 sec, hood sensor take another 30 sec, and for the siren.... Unfortunatly in our 1er this goes behind the driver side rear tire.... Tire needs to be removed, and wheel well cover.... Then there is an open compartment with a wire ... Takes Bout 5 min....
Total under 6 min!
