i have 2 sub grills that are supposed to connect to my 12v power source but my 12v source stays on at all times so im wondering if its possible to connect it so that it turns on when my headlights are on?
ik there are probly some wires i just have to connect it to but dont know wich ones.
any help is appreciated!

 

you should be able to hook them to the low beam wire to the headlights and be fine or hook them to your parking lamps

 

That's what I want to do but I'm not sure where that wire is!