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Vehicle Grid adds module grids to vehicles (like one in player's armor), which allows to install modules on vehicles
So, the idea is an armor module, which reveals map then installed on vehicle.

Vehicle grid: https://mods.factorio.com/mod/VehicleGrid
Mod which adds radar to trains (but does not uses a module): https://mods.factorio.com/mod/Vehicle_Radar

Like I wrote here: https://mods.factorio.com/mod/Vehicle_R ... 000b76068b

The overhead from checking if the entity and grid still exist, if the equipment radar is present and powered is a lot higher than cycling all vehicles of a certain type whenever a specific radar type finishes a sector scan.

It must be done on the C++ side, the lua-controlled mod will be too expensive by the equipment and energy checking.

This is not what your after, but achieves the same goal

'Big Brother' appears to attach an micro radar to entities (cars / trains / power poles) as research is progressed.
https://mods.factorio.com/mod/Big_Brother