Trailer fog light - did you know?

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Trailer fog light - did you know?

Postby Alacrity » Mon Jan 22, 2018 3:07 pm

If, like me, you are not 100% sure on the rather complicated law regarding trailer lighting this will be of interest. Particularly the paragraph referring to fog lights. Basically what it is saying is all our boat trailers (apart from the very odd instance) are required to have a rear fog light as they will be over 1.3 metres wide (4' 3").

Requirements:

If, in the case of direction indicators, it is not possible to meet the maximum height requirements, this dimension can be increased to 2300mm.

If, in the case of the rear position (tail) lamps and stop lamps, it is not possible to meet the maximum height requirements, this dimension can be increased to 2100mm.

On trailers manufactured after 1 October 1985, the maximum height of the red triangular reflectors can be increased to 1200mm if necessary.

Trailers manufactured after 1 October 1985 require numberplates, illuminated by an 'E' or 'e' marked lamp. If a clear window in the rear position lamp is approved, this can be used instead of a separate numberplate lamp but must be fitted to the manufacturer's instructions with regard to distance from the numberplate.

At least one rear fog light is mandatory on trailers over 1.3 m wide. Two lamps are preferred but, if only one is fitted, it must be to the offside or on the centre line of the trailer.

No maximum distance from the outer edge of the trailer is stated for a fog lamp(s) but there must be a minimum distance of 100mm from the stop lamp.

The distance of the direction indicator from the side of the trailer may not exceed the actual distance of the rear lamp by more than 50mm.

Trailers manufactured after 1 October 1985 which are more than 1600mm wide, (except boat trailers) require front position lamps (clear lens).

Certain trailers must have side position lights which show white to the front and red to the back. In addition, trailers over certain lengths must have amber side reflectors.

Mercs are like women, no 2 are exactly alike. That's what testing is about. In general it is safer to test motors and props than women!
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Re: Trailer fog light - did you know?

Postby Rapier » Wed Jan 24, 2018 2:26 pm

Most lighting boards have fog lamps fitted now. I guess if you're running submersible lights you need them as part of the trailer?
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Re: Trailer fog light - did you know?

Postby Alacrity » Wed Jan 24, 2018 2:46 pm

You would yes. Having just ordered a new LED lighting board for the Delta's it would appear that a lot do not have fog lights on them.
Mercs are like women, no 2 are exactly alike. That's what testing is about. In general it is safer to test motors and props than women!
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Re: Trailer fog light - did you know?

Postby Rapier » Wed Jan 24, 2018 4:54 pm

Alacrity wrote:You would yes. Having just ordered a new LED lighting board for the Delta's it would appear that a lot do not have fog lights on them.


Yes, saw that on fleabay..
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