Unfortunately the bulbs do not come with good instructions, so I had to figure it out on my own, but it's simple. To get the lights to start:
Open up the middle section and remove the white paper so the batteries can be exposed.
Reconnect bulb and batteries
Depending on where you will be installing bulbs (car or bike), attach bulb to valve stem.
Initially I was going to rate these a 3 out of 5, because some of the lights took a little long to work. I pretty much drove down a few streets around the neighborhood getting the blue lights photo ready. One of the green bulbs chose not to participate in my blog post (I have to deduct a star).
Then I came across the white bulbs which are the ones that change colors. For some reason when I read that the package contained blue, green and multicolor I mistakenly thought they meant the variety of colors included in the package. This was soooo cool! As soon as I removed the little white paper from the battery and reconnected the bulb and battery, the multicolored bulb was very eager to show off its abilities. I didn't even have to drive for it to work, it was blinking in my hands, so I took photos and a video of it while my car was still parked in my garage. I'm trying them on everything. I rate these bulbs a 4!
In Florida, although they are not legal for regular street driving, I can use them at car shows and even some events (parades, etc). However, they can be used on bicycles, which is how I plan to use them because my ugly, plain bike could use some style!
Save 50% on a package of LED Bike Lights now through the Fall of 2015