So was it an issue with your Brake Force Display? Error leaving it in "constant on" or connections reversed?

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Not sure what model year that came from but the'01 has no power to the brake filament of the top lamp so cannot do the extra light trick.

I rewired my brakes lights to always use all four but only could do this because I have a replacement set of tail lights. (made in 09 I think).

You wired as I described above; parallel wire of the run/brake wire (from lamp 1) to both lights.

The wire to lamp 2 is full voltage always. The wire to lamp 1 is b lower voltage for run, full voltage for brake.

Fortunately the LED circuit is compatible with the way that works.

Can you share the model you bought in interested in upgrading to LED tail.

hi. they were from amazon. brand: eagle eye. £207.61

LEDs don't work well with pulse width modulation. You should be able to code the LCM for LEDs and some other parameters on how the brake and tails lights work.

I'm glad you got them working. I usually just lerk around these forums, sometimes I'll put some input in that hopefully helps someone out. I definitely dont know everything about these BMW,'s . I'm still learning myself. It's like a hobby owning 1 of these older X5's.

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Depends on the design of the LED module. Just need a capacitor to even the voltage out or have fast enough pwm so you don't see the blink. Seems this lamp assembly works ok but without video hard to tell if they blink.

I have led rear turn signal and in hazard blink mode, you can see the pwm blink but not during normal turn blink.

yes i got them working but noticed today when i went out that because the light wires are not connected, i am going to get the warning up on the dash everytime. any way i can stop this?

Your talking about the warning for a burnt out bulb?

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Led tail light issue
 

You have to program the LCM to not look for bulbs at start up else people put high watt resisters in the circuit to fake being bulbs 6 Ω for the 21w filament, 24 Ω for the 6w (top lamp) filament.

The 6 Ω resistor will get very hot make sure it is Isolated from things that care or you can use some jb weld and glue it to the sheet metal to duct the heat to the body