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Old Sep 11th, 2017, 22:22   #38
dingov70
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Last Online: Yesterday 07:47
Join Date: Jan 2015
Location: Blackpool
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Dingo,
Are you an MOT tester? In which case - can you clear up the question about legality of using LEDs in cars which didn't originally have them. Something about the lenses being designed for old bulbs, plus no regulation about LED light patterns (scatter etc).



YES I am ,
Put it simply , we check each light illuminates when operated , is the correct colour & Dip beam pattern is as as shown in the diagram
:-

I have had reason to fail cars with ultra bright LED bulbs over the rear number plate , capable of fading the reflective backing as you watch ( through a welding mask !) . As well as comedians fitting blue , red , green or purple front sidelights . The regs require a steady white or yellow if fitted within a continental style yellow headlight & steady red to the rear .

Bottom line as a tester is does it work ? , yes ? , = pass . Right colour & working = pass . Failing incorrectly can result in gaining penalty points against my testing licence , so most likely result is pass & advise .

HID aftermarket kits fitted into halogen type headlights without projectors lens FAIL all the way .

DVSA has as yet not issued any strict guidelines about LED bulbs . feel free to read our "bible / qouran / words to the wise "

https://www.mot-testing.service.gov....4i00000001.htm .


Also being truthful , my V70 has ABM projector lights up front fitted with HID dip & LED in mains , LED angle eyes behind fresnel ring around projector lens & W5W COB in original sidelight position . All rear bulbs are led behind prismatic lenses , no problems BUT all are equivalent to standard tungsten bulbs
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