This 60cm LED wreath was bought from Deals Direct in 2011. It came with a multifunction controller and 12V AC plug pack.
I chopped the MF controller off and done some measurements with the help of my multimeter and adjustable power supply.
It’s basically a 4 channel device with the added wrinkle of two common positives; one for colour mode and one for white mode.
Fed from 12V DC, each channel draws around 25mA – 29mA depending on the colour or white mode.
There is a small inline switch to select colour or white mode, so you could leave that connected to simplify control.