Installation was very easy on the Vespas, through the alarm wiring. I only needed a lead to the brake, also easy on the GTV, but the GTS needed opening of the headlight-instrument assembly. The installation position next to the horn was as it is designed for it. It is programmable, you can change the sound, delay and every other setting through the brakes.
It stops beeping when you brake, resumes when you release! Overall an excellent product, I ordered another two for jealous friends.