DIY comming/leaving home lights k12

hi to all.
i'm trying to make the lights on the first switch position work when i unlock the car at the same time and duration as the interior light. so i tought i could use a relay and connect it something like this
89107995393939000553.jpg


the only problem is that i can't find the wire witch goes to the combination light switch, does anyone know witch wire i need?

i am also open to other suggestions witch could be more simple.
 
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