LEDs in fog lights

[kistigun]

Hey,

Just fitted some nice LEDs in to the fog lights. Tested them but they are flashing. Anyone knows what the problem is?

[mk2k41]

Were they Canbus bulbs?

[kistigun]

No idea, probably not. So they need to be canbus proof or can i fix it by placing resistors?

[cameron20020]

You might be able to fix them by placing resistors in parallel.
I've not tried them in Citroens, but when I used to do angel-eye & led conversions on BMW E46s, I'd place a 36 ohm 10w resistor in parallel wherever leds or CFL inverters were replacing incandescents. Parking/side lights mainly, and sometimes indicators.

If they kept flickering, a 2200 or 4700uF electrolytic capacitor would also help smooth out the volts. Make sure it's rated 20v or higher (surges can slowly cook them), and preferably a 105C one, engine bays cook 85C capacitors.

This was before canbus friendly bulbs were cheap. If you can get some cheap canbus bulbs, best just do that, far easier.

[kistigun]

Thanks for the tips!

[Bigfeet]

Wouldn't an LED bulb negate the effect of the fog light for when you do need really them?

[kistigun]

I use them as cornering lights

[dan265]

How did you turn on corner light?

[MARK.A]

How did you turn on corner light?

I know there is a option on diagabox but have not tried it yet saw it last week when I was removing some fault codes and re coding my dash display

[kistigun]

There is indeed an option in diagbox. With the cornering lights turned on the fog lights will lose their normal function

btw: fixed the original problem by fitting 2 big resistors(3 Ohm 50W)