Hi Graham.
It isn't necessary to have reversing lights on your caravan. However most modern vans do have them included.
What is more effective to alert people to you reversing is to use your hazard flashers. To add more safety you can get a beeper that plugs into the bulb holder for your car's reversing lights.
I also get my wife to act as "banksperson" to guide me backwards and ensure kids on bikes etc stay clear of the reversing outfit.
Steve L.
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