This magnetic LED light works great when attached to any metallic surface including the area around the needle bar.  There are 2 strips of 6 LED lights.  This light works great on larger machines that have enough space around the needle bar for (2) strips to  flood the sewing area with enough light to help you sew with ease.
The light has its own on/off switch that allows you to turn off the lights if you wish. 
With Titan TN-550W/750W motors, they have a 110V plug in that allows you to keep the light plugged in and turned on all the time.  When the motor is turned off, the light is turned off.