Baluns

Baluns are tiny transformers used when sending composite or component video over cat5 (twisted pair) cable. One is put on each end of the cable for 'balancing and impedance matching'. Though you would get an image if you did not use baluns, it would be much more susceptible to noise.

GOOD - Balun with pigtail (click image to enlarge)	BAD - Balun without pigtail (click image to enlarge)

Pigtails

Use baluns with pigtails. They can always be taped or zip-tied to the best position on or near the camera.

"Pigtailless" baluns cause space limitations and may have BNC connectors which are free to spin inside the case, tearing loose the tiny internal wires.