I just bought two BG cooltubes.

A mogul base socket is mounted inside the cool tube with a short cord coming off of it. The end of the cord has a male BG plug on it.

Unlike computers, the hydro industry has failed to standardize so every ballast manufacturer has their own electrical plugs and every light fixture has it's own plug and unless both fixture and ballast are from the same manufacturer, the plugs won't match. So, you need an adapter. The adapters are readily available at hydro shops and on the net.

Once you have the right adaptors, the system is pretty much plug and play. Below are photos of my cool tubes and ballasts. If you enlarge the pics you should be able to see the wiring real well.

So the wiring goes: cord from light socket -> BGHydro extensin cord -> BGHydro to Sun adapter -> ballast.

Cool tubes rock - heat wise. The outside of my cool tubes is cooler than a cfl.
PharmaCan Reviewed by PharmaCan on . 600 HPS Cool Tube Grow Light System 600 HPS Cool Tube Grow Light System is the cooltube wired to the right cordset and plugged into the ballast? i really want to order this system, but every company i email eventually tells me "no we dont wire the ballast to the cooltube"... anyone have one from bghydro that could comment ? Rating: 5