horsebox lights help please

scribble

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I have a 7.5 ton man which passed it test on wed no probs. Wehn i took it thorugh there were no brake lights, however my mechanic wiggled a fuse and they came on no probs. Now got up this mornign and YO said my marker lights down the side of the lorry and one side light is one. I go up there thinking i have knocked switch and nothing is on. No swithces on. turn them all on and all off again and nothing happens still on. think they must be on same circuit as headlights so take those 2 fuses out and also fuse for rear lights and nothing. still on. Have managed to get them off by disconnecting battery and putting battery on charge but any ideas???Rang my mechanic and he has no idea apart from what i have already tried. no indicators left up or down nothing.
 
I have a 7.5 ton man which passed it test on wed no probs. Wehn i took it thorugh there were no brake lights, however my mechanic wiggled a fuse and they came on no probs. Now got up this mornign and YO said my marker lights down the side of the lorry and one side light is one. I go up there thinking i have knocked switch and nothing is on. No swithces on. turn them all on and all off again and nothing happens still on. think they must be on same circuit as headlights so take those 2 fuses out and also fuse for rear lights and nothing. still on. Have managed to get them off by disconnecting battery and putting battery on charge but any ideas???Rang my mechanic and he has no idea apart from what i have already tried. no indicators left up or down nothing.
it sounds like a job for an auto eletrician, howerver you could check the wiring at the back as this is where it gets messed about with during the horsebox conversion and can cause shorts and other gremilins when its been on the road for awhile due to water getting into conectors and lamp units...
 
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