TR6 Green Indicator LED Posted April 7, 2020 Report Share Posted April 7, 2020 Having replaced all the TR6CR flasher bulbs with new LEDs, together with a new LED Flasher unit, the green LED dashboard warning light is bright green when the left hand indicator is working but only a very subdued green when the right hand indicator is working. The green light flashes at the correct speed however and all four indicator (front and rear) LEDs are brightly lit so no problem there it seems.I have checked wiring and earth connections and all seems OK. Any ideas as to the solution would be welcome. Quote Link to post Share on other sites
DRD Posted April 7, 2020 Report Share Posted April 7, 2020 Is it a special LED bulb which works properly both ways? https://www.classiccarleds.co.uk/products/1xtriumph-tr6-tr250-spitfire-sprite-midget-green-led-indicator-warning-bulb-e10?_pos=2&_sid=e3a2c0b8f&_ss=r Quote Link to post Share on other sites
TR6 Green Indicator LED Posted April 7, 2020 Author Report Share Posted April 7, 2020 Yes it is a direct LED substitute for the 2.2 watt 987 filament bulb. Quote Link to post Share on other sites
RogerH Posted April 7, 2020 Report Share Posted April 7, 2020 The TR6 indicator warning light is polarity sensitive. A simple filament bulbs does the job. Does your Indicator relay give a single polarity or does it switch polarity depending on direction. Roger Quote Link to post Share on other sites
RobH Posted April 7, 2020 Report Share Posted April 7, 2020 (edited) 1 hour ago, TR6 Green Indicator LED said: Yes it is a direct LED substitute for the 2.2 watt 987 filament bulb. I think you have misunderstood. The standard wiring configuration for a TR6 has the supply polarity for that bulb inverted depending on which side indicators are working. That does not matter for a conventional bulb as it will work either way round. An LED though is polarity sensitive so will not work properly unless it is a bi-directional device. A conventional LED replacement is not. You need a special one as DRD and Roger have said or put the normal bulb back. (There is another way of doing it which involves a diode bridge, but it probably isn't worth the complication unless you are an electronics nerd) Edited April 7, 2020 by RobH Quote Link to post Share on other sites
Mk2 Chopper Posted April 8, 2020 Report Share Posted April 8, 2020 I fitted the same reversing polarity indicator bulb, much brighter and easier to see you've left the indicator on if it didn't self cancel. Gareth Quote Link to post Share on other sites
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