indicator bulb polarity

[kenloen]

I have replaced all the dash warning indicators with some aftermarket jobs, see another post regarding carbon dash facia,

however the indicator flasher only works one 1 direction, so Im thinking maybe the bulb setup originally by Noble is reverse polarity dependant on direction selected.

anyone know how I can create a single polarity for either direction to make the new indicator work?

here is what i have fitted.

http://www.carbuildersolutions.com/uk/black-bezel-...

[kenloen]

Ok the new bulb only flashes when the car is turning left, turning right I get nothing.
The lamps are all directional, meaning if I reverse the connection they don't light (led), whereas a bulb will light up regardless of the wiring polarity.

[kenloen]

Rob_W said:

The standard wiring does switch polarity depending on direction which doesn't matter with conventional bulbs but will effect LEDs. I only encountered the issue when fitting LED dash indicators so fitted a relay so the standard circuit fed a constant polarity feed to the LED, assume you would need to do similar on a grander scale for the indicators themselves?


PS Thinking about it the main ones may not be affected at all but haven't checked those circuits

Edited by Rob_W on Tuesday 24th May 19:54

I think that's it. a fused direct live feeding into 2* 12v relays, then the indicator connectors 1 to each relay switching the output to the led lamp...

[kenloen]

Adrian W said:

I won't bother drawing the correct way with diodes then

oh sorry missed that.. if you wouldn't mind..

[kenloen]

can anyone help with this?? If I feed the negative direction to a relay and use that to switch a positive feed to the LED indicator (sharing the + connection (as they don't normally work together at once), I get both sides working as they should - however when using the hazard relay, both lights come on and stay on, not flashing.. MOT coming up and I need all circuits to work correctly..

[kenloen]

apologies for this super crude drawing of the circuit I have, this allows the Dashboard LED direction indicator to flash when either direction is selected. problem is when I choose hazard I am getting a non switched 12v+ feed and the whole circuit comes on, but it doesn't flash. If I remove say the right feed then everything works (except the right dash warning. I guess I could buy another led indicator, but that would look crap..

[kenloen]

sorted. I used both indicator wires to the relay. rather than a feed then earth. I figured if a bulb lights from either direction, then the relay would fire from the same feeds. tried it and everything works.