I know that they only work when put into the socket one way rather than the other and with them have really improved the display on my 1996 300tdi 90 All is well apart from the indicator light which only works one way or the other and not both
Any solution ?Q?Q?
If it's a single warning lamp for both sides the bulb can be connected across the inputs to each side indicator circuit, when one is powered, the bulb uses the opposite side circuit as an earth so that either terminal of the bulb can be connected to ground depending on which side indicators are selected. As the led lamp is polarity sensitive it will only light one way and if the bulb is turned round it will only work the other way. You will have to use two leds, one for each side both with their negative sides connected to ground and with separate feeds using the existing bulb wires, or go back to an ordinary filament type non-polarity sensitive bulb.
Put another LED in parallel t'other way about.
If it's a single warning lamp for both sides the bulb can be connected across the inputs to each side indicator circuit, when one is powered, the bulb uses the opposite side circuit as an earth so that either terminal of the bulb can be connected to ground depending on which side indicators are selected. As the led lamp is polarity sensitive it will only light one way and if the bulb is turned round it will only work the other way. You will have to use two leds, one for each side both with their negative sides connected to ground and with separate feeds using the existing bulb wires, or go back to an ordinary filament type non-polarity sensitive bulb.
or a small diode bridge, to "rectify" the DC so the LED always gets it how it wants.
Dave B.
Providing he understands how it works after my somewhat rambling explanation.
Use a "Bridge Rectifier", something like:- Maplin part number AQ98G, a "KBPC1005" at 53p!
Cut the two wires that go to the indicator lamp and wire the bridge into the wiring like this.
Left>------ ~ + ------>Led +
Right>----- ~ - ------>Led -
Left and Right, are the feeds from the Left and Right side indicators. ~ is the AC symbol on the rectifier.
It's rated 60V 2A. More than enough for an indicator lamp. Either solder wire tails to it, remembering to insulate the exposed joints. Or use a small chocolate block connector, but again wrap that up, to make sure noting shorts to it.
Hope that helps.
Dave B.
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