I just bought 3 of these for $60 each delivered from Ebay.
I have stuffed around with trying to make my own lights etc, however in the end, it was so much easier just buying what I needed.
The LEDs are very bright, much brighter than my 5050 LED strip that I bought for $15 from ebay.
I will snip the cig plug off, and shorten the cable to what I need, and fit a merit plug to it.
The switch is fairly close to the light, so if it is mounted high, short people will find it difficult to reach.
The dimmer is really good.
I wish I had bought these before I rooted around for months trying to make my own strip lights.