I put these on my boat. Cut the connector off on the DC adaptor side and wired em directly to 12v dc boat power. Make sure to test which side is positive cause if you get them backwards they wont light up. They seem very well constructed and light up great. I just hope they survive many seasons.
Strung 15 strands together on my sailboat mast to make a Christmas tree silhouette. Very impressed with my design, as it looked very beautiful anddrew lots of compliments, but these lights made it possible. Just plugged them in as a single strand to one 12-volt cigarette outlet on the boat (powered by 2 group 24 house batteries that are 75 Ah each), and it worked great! Lights were nice and bright for 3 hours (and would have been for much longer, i.e. minimal capacity drain on the batteries).
I decorated a wreath on the front of the car using the Seahawks colors. It took a little extra effort to find a 12v source tied to ignition (headlights are only 9v) so that wreath would illuminate while driving but well worth it in the end.
I didn't know how versatile these lights were until i had them in my hands. My wife and I were going on a Toys For Tots parade and wanted to dress up our car for the ride. After reviewingthe website and reading over the reviews, I decided to order two sets each of the red and green 12 volt light bulbs. I had some questions as how to fix the lights to the car and sent an inquiry to Customer service. Shellie, the owner got back to me within a few hours and I placed my order on a Monday and selected two day shipping. I recieved the order that Wednesday and was very pledased with the lights. I have a new car so I affixed command strips with hooks to the glass on my car. The hooks held very firmly even at expressway speeds. Each light set came with a plug in for the cigarette lighter or you can simply unplug the lighter adapter and plug it into another set of lights. Very cool and very flexible. I look forward to ordering more to make a biiger impact next year.