This is from my Civinfo site, just edited highlights:
It's really easy to do, but takes a little time as you have to perform a map update on your system.
Firstly get yourself a blank USB key (min 8gb, max 32gb). Then go here and follow the instruction to update your maps:
https://honda.garmin.com/honda/index.htmlDon't worry if you've recently updated your maps, you won't use up your free updates. The 5 free updates Honda give refers to the annual Garmin update... you can download each map/update as many times as you want within that 5 year period.
When done you should have a USB key with lots of files/folders on it.
You then need to obtain the Garmin CSV download from PocketGPSWorld, SCDB or Cyclops, (needs a subscription) and use Garmin's POILoader to create a .GPI file if your download isn't .GPI.
Then copy and paste the .GPI file into the POI folder that is on your USB key. Dont delete the other .GPI in the folder as that is all the other POI's for your system.
The take the USB key to your car and update the maps as normal.
Once updated, you will get the alerts automatically when you are near a camera.
To enable the sound, you will have to reset/restore the Garmin App (NOT the connect system). Don't worry, it's not as drastic as it sounds... it just resets the Garmin settings back to default (and enables the alert sounds). You don't lose the history or saved favourites etc. You just have to set units, map colour etc.