Originally Posted by NiVeDh
For E90 LCI tail light retrofit, you need to "re-order" the wiring harness so that it looks like this:
I understand about re-ordering the wiring harness for Pre-LCI to LCI to get the correct output for the trunk lid lights and I have done this. My experience is described below.
brake not pressed all lights off
brake pressed lights up normally, outside tail lamps illuminate
brake not pressed rear light bars are on and outside brake tail lamps illuminate
brake pressed rear light bars are on and outside and inside brake tail lamps illuminate
I do NOT have coding yet and was just wondering if its normal to have these issues before coding is done.