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character
Member Since: 01 Jan 2008
Location: wiltshire
Posts: 5781
  
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| Towing eletrics - keeps blowing a 5amp fuse every 7 secs |
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On me way home tonight with the trailer (5 weeks old BJ car trailer), noticed the offside trailer lights not working ie LED front and side markers, rear tail light on o/s however indicator and brake lights work.
Checked the bulbs, all fine then checked the fuses in the rear compartment, found a 5amp fuse blown, replaced with new one, normal serviced resumed - all of 7 seconds then back to original problem 
any one else had similar issues or should I replace the 5amp ones for 7.5am/10amp?
could it be the wiring harness is getting a bit tierd? 
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 10th Dec 2010 11:44 pm |
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Carabraxis
Member Since: 30 Dec 2007
Location: Mansfield
Posts: 220
 
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Sounds like something shorting to earth to me. The salt on the roads at the moment could be causing a bit if tracking.
With it being a new trailer have the put a screw through a wire in the build?
Have you tried the trailer on another vehicle to see if it blows the fuses on that?
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| 11th Dec 2010 12:20 am |
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Ent
Member Since: 12 Oct 2007
Location: In the cack
Posts: 6485
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If it's not the trailer that's causing the problem have a look at the wiring loom closest to the harmonic dampers, maybe a bit of chaffing causing a short to earth. Have a gander also at the socket itself and make sure the pins are straight and not corroded. Club Exped trailer
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| 11th Dec 2010 12:27 am |
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character
Member Since: 01 Jan 2008
Location: wiltshire
Posts: 5781
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going to give her a thorough seeing to tomorrow
Personally, I recon with all this weather and the age of the wiring loom its going to have something wrong 
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| 11th Dec 2010 12:31 am |
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NickJ
Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137
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A few months ago we bought the smallest of those open trailers like Halfords do (but not from them). Towing with my previous vehicle, I noticed that the side lights (on the car) came on whenever I braked. Disconnected the trailer electrics and everything back to normal so obviously something on the trailer.
Taking the light units apart I have never seen such poorly installed connections. The stranded wires were pushed under sprung clips that are part of the bulb holders. They came out as soon as I pulled them, and the excessively long conductors were touching other wires, causing false feeds. Removed all, remade using solder connections and been fine since.
So I'd look in the lamp units and 7pin plug first of all to see if there's any suspect wiring. Solder connections in that environment are definately the best way to go.
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| 11th Dec 2010 8:02 am |
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character
Member Since: 01 Jan 2008
Location: wiltshire
Posts: 5781
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update - tested the towing eletrics on the d3, all fine, revisted the o/s rear lamp fitting, water/dirt in from the fitting and then arking across the positive/negative.
Spoke to BJ, collected new fitting and new wiring loom for trailer, dont yer just love BJ even if they do run 3x d3's 
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| 12th Dec 2010 12:12 am |
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NickJ
Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137
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Ah, I was half way there with my thoughts...
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| 12th Dec 2010 1:41 am |
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ostosix
Member Since: 19 Mar 2017
Location: Lincoln
Posts: 305
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Sorry for bumping old thread.
I have the same fault ie trailer RH side light off but everything else works fine. This has happend on two different trailers so i presume the fault is my disco electrics.
I will check that fuse thankyou
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| 4th Apr 2019 9:39 am |
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