Also interested on the LED bulbs:
I have been testing some bulbs for the flasher (to replace 7506 or 7507 / BA15S or BAU15s bulbs) but all the LEDs I found so far are actually unsatisfied: they are not bright enough, worse than the original 21W incandescent lamp. For the LED bulb error message “issues” I been using parallel resistors and luckily in my 2011 X3 resistors are needed only for the rear flasher bulbs.
Many web stores advertise their bulbs to be “super bright e.g. 8W LED BULB” like the example here:
http://www.ebay.com/itm/280709475309...ht_2820wt_1077
Actually that amber bulb linked above uses only 3.1 to 3.2 watts. And the LEDs in the bulb do not even get all that power because part of the power is consumed anyway by the driver electronics inside the bulb. The luminous flux of that LED bulb is obviously less than 150 lumens when the “original” 7506 and 7507 incandescent bulbs produce 460 and 280 lm.
So where to find bright enough LED bulbs to replace the original 7506 and 7507?
I have not found such LED bulbs yet so I am in the process of building bulbs for myself. My raw material for the flasher bulbs are:
- bright amber LED components:
http://www.luxeonstar.com/PC-Amber-5...r-05-l0000.htm, three such LEDs for one bulb producing 3 x 130 lm (390 lm total with “pure” 6.2W of LED power per bulb)
- aluminum U profile 13mm x 10mm x 1.6mm
- for tail lights: BMW X3 spare part 63217288198 “Bulb socket, rear light side panel”, two pieces
- for front lights: BMW X3 spare part 63117287863 “Bulb socket, turn indicator”, two pieces
- four pieces of 700mA/14W LED constant current power modules from “XP Power”
- some screws and other small staff..
But as said: eager to know and get info on “commercial” LED bulbs (…bright enough).