Top Brake light

Jul 16, 2025
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Hi All
Retired man Bailey Unicorn III Valencia Owner 2017
The high level brake light has stopped working. There is no power at the light although the light works when tested.
Can anyone tell me where the feed comes from for this light a its an LED and I am led to believe has a different voltage to the lower brake lights.
Any help would be much appreciated

Drue M
 
Apr 23, 2024
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The wires come up between the gap in back wall of the caravan and the rear plastic/fibreglass outer rear panel. At the bottom is a multiway connector tucked inside . To access it you have to undo the screws securing the rear panel to the floor, and brace the outer panel open ( screwdriver handle) and trace the wires up to the high level brake light. good luck its not easy
 
Oct 8, 2006
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Whilst they are a 'nice' thing do have, do remember that high level brake lights are not a legal requirement and are not checked as part of the MoT if fitted.
 
Nov 11, 2009
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Whilst they are a 'nice' thing do have, do remember that high level brake lights are not a legal requirement and are not checked as part of the MoT if fitted.
It’s on the OPs caravan, so no MOT concerns there. But useful to know wrt a car. 👍
 
Jul 16, 2025
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Thanks IanB1485. I really appreciate your advice and will have a go at it.
Also thanks to all others who responded and I take note that its not a legal requirement but like said nice to have and adds to your on road visibility.
 
Jan 3, 2012
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Hi DrueM Welcome to the forum sorry I cannot help but i think you are getting plenty of advice hope you are soon sorted then you can enjoy your caravan once again 🙏
 
Oct 8, 2006
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Thanks IanB1485. I really appreciate your advice and will have a go at it.
Also thanks to all others who responded and I take note that its not a legal requirement but like said nice to have and adds to your on road visibility.

Probably why Bailey stopped fitting the HLBL on Unicorn S4 models but they returned to it on the S5 and DeLuxe.
 
Jul 16, 2025
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Quick update.....
Found the multi way block no problem but can only trace enough wires for the rear Tail/Stop lights to each side. Wire colours match to each side but no Double connecter wires.... After much metering and head scratching I have come to realise I don't need a HLBL after all LOL.... But thanks to all who replied
 
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Mar 14, 2005
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All vehicles, including trailers are expected to comply with the construction and use regulations, even those vehicles exempt from MOT tests. This applies to all matters set out in the regulations, and if a trailer is non compliant and its used on the highway, if it is detected then the authorities may take the non compliance to prosecution.

As far as I know, trailers are not required to have a High Level Brake Light (HLBL) However if such a light fitting is visible, it should also be functional.
 
Nov 11, 2009
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I cannot see the formal link between your first paragraph and second paragraph. Do you have a specific reference please.
 
Nov 30, 2022
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Basically the Con and Use Regs stipulate that all lights, if fitted, must work.
Con and Use Regs apply to cars and trailers.
 
Apr 23, 2024
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Easy answer remove the offending high level brake light, when you that you may actually find where it's wires come from. I have a handy endoscope for looking between the back wall and the rear abs/fibreglass panel for things like witness marks of water dripping down the void,and wires and joints/hidden connectors etc.
 

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