Apologies for asking again, splicing for led lights?

[T6Gary]

I want to add 6 led lights to the rear of my 2017 T6, I was just going to splice into loom so they come on when unlocking and go off when locked. My question is which two of the three wires would I use on the factory plugs?
Again apologies for asking this the millionth time but wading through all the posts has just got me more confused.

 

[Ads_Essex]

Red/Black +ve (turned off by the van after around 20 minutes)

Brown/Red -ve (switched on by opening the doors or unlocking)

The Brown wire should NOT be connected. This is permanent -ve and will leave the lights on constantly, until the +ve is turned off by the van timer.