So if you don't understand car wiring, you may have trouble connecting. If you connect the wrong pair of wires, you run the risk of dimming the light and rendering it unusable. So be careful if you accidentally touch the wires to see what's what. I'll probably just send it back as there are no instructions on how to wire it up. Too bad, looks like a nice device. Edit 5/20/19: The wiring is actually quite simple, red is 12vdc plus, black is ground/negative, yellow is 12vdc to the snap switch of your choice (meaning it goes backwards). open after you release the button), causing the flash pattern to change. I was also contacted by phone by Andrey, he contacted me to find out what exactly the problem was and after some discussion I came to the conclusion that this seller really cares about his customers. Whilst this light will not work here in the app I put it aside for now, I was perfectly happy with the device itself and will probably design around it on my next project so I CAN use a light that was THIS. Impressed by this (I make high quality custom electric skateboards and use lights to get riders' attention - I'm sick of being hit and driven by careless riders - what's better than flashing red and blue?). Five stars for the seller who takes the time to listen to the buyer. Hey raven! Let's get the ability to bold and italicize words so it seems like we're trying to emphasize a specific word or words instead of giving the impression that we're screaming as we write. Just a suggestion.
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