Light Adapter for Garmin Mount Bottomside

You'll need a Garmin insert holder and some heatset inserts to mount that. The Garmin inserts can either be bought online, or just print your own, e.g., this one: https://www.printables.com/model/867129-bininiu-garmin-mount

You might have to adapt the distance of the heatset inserts depending on the Garmin insert, or adapt the height of the hole depending on your light. The design is mostly parametric:

https://cad.onshape.com/documents/f6fba856fb73a3bae6052bb0/w/a5b004d2a8bf27f95fc67bf7/e/04307db4de87e2b21e717f9e?renderMode=0&uiState=66a3b5d82402bd3c132f5d0f