Tail lamp, right error

I am wiring a trailer converter on my w164. The converter has a black wire that needs to connect to the battery. There is a rear sam in the trunk on the passenger side. Can you please tell me where on the rear sam I can connect this black wire (power wire) to? Thank you.
Can you also tell me the trailer wire colors for a w164?
Tail light
Brake/stop light
Left turn signal
Right turn signal
Thank you so much.
Last edited by farmersgroup; Jul 12, 2025 at 04:20 PM.


