HELP Activa Boost Gauge Fitting

[patneenan]

I've just bought and fitted an MBC, ( a manual boost controller) and a boost gauge.
I fitted the mbc no probs (thanks Macaroni for the photo ) but I don't know where to connect the boost gauge to.
Is there any kind soul out there with a photo of where I can connect it to
I know one or two of you Activa guys have fitted one.
All help would be appreciated
Many thanks PAT