Modern Vespa

Just purchased a new mp3 yourban 300. I am finding it difficult to locate the alarm connection. Does anyone have an idea where it is?

I am also trying to locate this connector on the mp3 500.
From my research it appears to be on the nearside rear behind the battery on the underside of a frame member but have not been able to remove enough panels to expose this connector.

On the 500 abs, in the workshop manual, it is right hand side as sat on bike, approx 1 third of seat length from the front behind the panel. Probably same on your an as they use similar looms.

Found it on the left hand side under footboard

I'm in the process of installing a Piaggio alarm on my Yourban. I would like to know how to get to the alarm connection beneath the floorboards. More important how to remove the panels and in which order. Any help or guidance is appreciated.