So I have traced all the wiring and it seems ok. A strange thing though is when I use my scan tool to activate the trailer lights the only one that seems to activate during the 15 sec test are the reverse lights.

However when I check functionality of the trailer lights manually using the indicators, brake pedal and lights using the scan tool they all show that they activate only while operating the car controls.

Again, no messages from the car on the dash until I operate something, then I get the check trailer lights message.

I'll upload the wiring diagrams for those interested.

I think Pin 10 is mislabeled at left when the description says right in the first schematic.

Appreciate your help.

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