Actually, it was all for nothing! Turns out the quick splice I used wasn't sufficient to connect to the "brown" wire. I went and bought some T-taps and tapped into the same wire and they came right on!

No idea why my wire is brown instead of gray :noidea:

Did mine by tapping into the dome lighting as said in OP. At first it wasn't working but it was cause I used a t-tap made for 16-18gauge(blue) and it was too big, I then used a red one 18-22 gauge (I think?) and they came on immediately. So stoked! Hardest part was reaching in to tap into the gray wire.

Edit: not sure why the pics came out sideways, uploaded from iPhone. Sorry :/

I need Help
I have a 1SS. I want to install Footlights in my Gen 5. I want, if i open the door that the Footlights goes on and if the main lights are on then I want that the footlights goes on too.

I NEED HELP. Sorry for my bad English. I come from Germany.

My question is will wiring the lights like this allow me to turn them on and off with the dome switch or do I need to come off the dome switch wiring? Thanks in advance.

Yes.