spot lights

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When Land Rover were selling the "Lara Croft" Defenders they came with lights on the roof bar that didn't work in the UK! I believe you had to get a relay, the plug was there, to make them work, but Land Rover couldn't legally sell them with the relay fitted!
 
quick question can you legally wire up roof mounted spots to your high beam ? An running lights on same light bar to he side lights?
You can if they are type approved ie E marked, switched by the main beam circuit through a relay. This limits you to 60W max bulbs and they must be either white or yellow.
They are considered "optional main beam headlights" under the Road Vehicles Lighting Regulations 1989.
You can't use any other fittings or bulbs, 100W bulbs are illegal for road use.
 
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You can if they are type approved ie E marked, switched by the main beam circuit through a relay. This limits you to 60W max bulbs and they must be either white or yellow.
They are considered "optional main beam headlights" under the Road Vehicles Lighting Regulations 1989.
You can't use any other fittings or bulbs, 100W bulbs are illegal for road use.

Roof mounted lights are too high to comply with optional mainbeam headlamp rules. So just put a switch in the circuit so they can be turned off when on tarmac roads. There isn't a road in the uk where you'd need the extra lighting provided by roof mounted lights.

There's also a very good chance that plod will nick you for having lights that are liable to dazzle, distract or otherwise cause annoyance to other road users. There's always the catch all of "altering the vehicle in a way likely to cause harm or annoyance to other road users" and that includes pedestrians and horseriders and cyclists. So unless you're 100% certain that you will dip your highbeam EVERY time you see any roaduser including all the above then it really isn't worth not fitting a switch so they can be turned off when on the road.
 
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this is a copy of a page from the fleet managers handbook and covers passenger vehicles,and goods vehicles.
 
Thanks for that Dazz but I think your transport managers Handbook may be wrong.
I think it is confusing "optional dipped beam" and "optional main beam" headlights.
The 1200mm and 400mm dimensions refer to "optional dipped beam headlights" not "optional main beam headlights" or they do in my copy of the Road Vehicles Lighting Regulations 1989.

Have a read, look at schedules 4 and 5 in particular.

The Road Vehicles Lighting Regulations 1989
 
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