Did you also try the custom visuals mod?
It gives you a larger radius for all emergency lights.
I love this one because patroling feels now much more realistic.
Radiance V is also an good option to make your lights brighter like OfficerMcNa said but this edits only the visualsettings.data
Custom Visuals also edit the carols.data which gives you the advantages i mentioned above.I think this would be a good mix.