This ETC Source Four 575 ellipsoidal light comes with a stage pin plug and a bulb. However, it doesn't include a C - clamp.

To use this ETC Source Four 575 ellipsoidal light, first, connect the stage pin plug to a suitable power source. Then, insert the bulb if it's not already in place. Remember, since there's no C - clamp, you'll need to find another way to secure the light. When using, keep it away from flammable materials. For maintenance, regularly check the bulb for signs of wear and tear. If the light seems dimmer than usual, it might be time to replace the bulb. Always turn off the power before any maintenance work.