Step 1
Check mounting surface
Use a flat object, such as a plastic card or a popsicle stick, to check whether the gap offers enough space for the tabs of the helmet adapter.
There is enough space:
If there is enough space in the gap and the object is jammed in the gap, continue with step 2.
There is not enough space:
If the item is not firmly clamped in the gap, choose a different installation variant for your helmet.