Hi all,

Just did a installation and wiring done for tow hitch as per installation instructions and right now only brake lights are on (without pressing the brake pedal).

I did triple check and am sure that wiring is done correctly. My only version about what could be wrong is that I need to install / code the new Trailer lights module. Installation manual states:
-Change in the ISTA/P car programming
-Select the “Trailer tow hitch” retrofit via the – Conversion – path and work through the created action plan

In some threads here I have read that it is best not to use ISTA/P, but instead use something like NCS expert.

Could this work be done through NCS expert or should I use ISTA/P? Do yall think the convertion would solve my problem?