Headlight wiring - positive or negative switched

I have seen this discussed before but the heck if I can find it now.

For the high beams and low beams are the positive or negative switched?

I wish to add a relay so auxiliary lighting is enabled with the high beams so I need to know if I enable a positive trigger or a ground trigger.

Thx

 

@caribe makaira

Also, check out the bright box:

https://www.aspireautoaccessories.c...oyota-tacoma-2016-2021?variant=39362276327488

 

The headlights (low & high) relays are negatively switched, but the headlights are positive. So add-a-fuse to HIGH and one for LOW, for positive trigger to added relays.

 

Also, check out this post: https://www.tacomaworld.com/threads/puppypunters-idea-hole.711584/page-15#post-25735743

 

Both great posts, thank you!!