The canbus on these are cheap, and most will eventually start throwing errors if not right away. In my case, they threw errors randomly.
I bought these about 2 years ago and they have worked flawless since.
https://www.aliexpress.com/item/2x-...081.html?spm=a2g0s.9042311.0.0.236b4c4duQLHQ3
Yes reverse are very tricky - 921 and 7440 - both of our kits are just LEDs without any outside hot resistors that do not trigger any errors at anytime.
Euro reverse (921):
http://deautokey.com/product/mk6-gti-golf-euro-taillights-reverse-cree-led-kit-error-free-and-bright
And 7440 - for stock non-LED tails:
http://deautokey.com/product/reverse-lights-mk6-vw-gti-golf-super-bright-pure-white-error-free
This is just an option for people that don't want to worry about hot resistors and not-so bright LEDs that trigger errors.
Ours are some of the brightest on market guaranteed and no errors with no resistors or splicing.
I have depo led tail lights. Do I purchase the 921’s?
Also I have blackline oem tail lights for an e90. Do you carry the reverse light led’s for those?
I have your interior kit for my GTI for five years now and no problems at all.