Electricians? Fish tank help
 

8 gallon biocube fish tank. I can email pics of the stuff I'm talking about. Or you can google YouTube for nano customs 8 gallon biocube wiring part 1,2,3. Anyhow got this used and came with that companies lighting and ballast upgrades. Company closed down. I have the ballast wired up correct and my light works. But this is a closed system and uses fans for heat build up in the hood. One brown wire left over on the power order end and no idea what on the ballast end I can wire it into that would work? Have some extra wires,I tied to that,then connected them to the other end of the brown wire,then into the red wire coming off the transformer for the fans. Transformer plugs into a circuit board. I can email someone pics if they can resize and post here thanks.