How do I connect a LED windshield sprayer light to a 1998 To

How do I connect a LED windshield sprayer light to a 1998 Toyota Camry?
I recently bought a windshield sprayer substitute the one that sits on the hood for most cars, and this one will include a blue LED light, so how do I connect that so that it lights up. it says to connect to the 12V battery source, where is that?

just connect the red wire to the +battery terminal and the black wire to any metal on the car or the of the battery
it will be on permanently but wont be a problem as it only uses tiny amounts of power

You could splice it into a wire that's hot when your head lights are on. there's another possibility that you could tie it directly in to the battery wiring and go through a fuse and a switch.

good luck.

well considering they look cool they're illegal. I could for cops sake hook them up to a toggle switch all you do is ground the switch then run a wire from you are toggle to you are battery then to the battery to the leds. good luck but I hooked them up straight to my headlight wire and got pulled over some number of times because they're blue, good luck

If you don't know where your battery is you may want to take to dealer without a doubt.

One question..WHY. POOR TOYOTA.