Finally did some measurements.
It was 1.3mA going through each LED with tail lights on and 23mA with brake lights on so no wonder replacement LEDs kept blowing after 3-4 weeks of use as they are rated 20mA. There are 3x 4.7ohm resistors in parallel on one of PCBs which should be 1.6 ohm total, multimeter reads 2ohm. I added 2 and then 2+2 ohm in series in one of the wires and with extra 4ohm current went down to 20mA, I cannot notice any drop in brightness at least not in daylight, will check again when it gets dark.
I will leave it like this for now with a total of 5.6-6 ohm. But will get 3x22 ohm SMD resistors to go in place of original on PCB and replace if LEDs fail again and I need to go in there again. This would give about 7ohm total and bring the current a bit more down to give a bit of margin.
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Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D
8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
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