# on/off switches - how do they work

**URL:** <https://forums.speedlife.net/t/on-off-switches-how-do-they-work/114723>\
**Category:** SON240sx Automotive\
**Created:** [April 15, 2008, 6:01pm UTC](https://forums.speedlife.net/t/on-off-switches-how-do-they-work/114723 "2008-04-15T18:01:01Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![matty](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/matty/32/5043_2.png) [@matty](https://forums.speedlife.net/u/matty)\
**Post date:** [April 15, 2008, 6:51pm UTC](https://forums.speedlife.net/t/on-off-switches-how-do-they-work/114723/4 "2008-04-15T18:51:41Z")

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> [@YOU ARE A DOG. THEY DONT EVEN FIT.](https://forums.speedlife.net/t/you-are-a-dog-they-dont-even-fit/16664/13):
>
> you should just be able to probe the switch in your car with a multimeter/test light and find the wire that gets 12 volts when the headlights are on.

that was my original plan

but… im an idiot and dont know how to use my multichecker i have haha

that is still my most viable option once i learn how to use it.

and minimum, i am currentlyu off of battery for my constant power, but essentialyl i want to hook them up to my headlights. ill have to learn how to use my multi-checker

i got it for christmas and dont have a clue - its an equuis version something something

ill have to research it

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