Ordinary light bulb connected to the line or line of fire?
Then the most secure line, then the line of fire is also OK, but not safe
Very simple electrical knowledge: zero line then lampholders, Firewire then switch, there is a control line.
In accordance with the building specifications of ordinary lampholders in the middle of the tongue connected to the line of fire, the mouth of the mouth connected to the zero line.
The zero line FireWire to be connected, generally have two wiring screws, you see the mouth of the mouth or bayonet bulb, if the home test pen to confirm the good zero line and FireWire, in the lamp holder, the general inside Of the point of contact should be connected to the line of fire (you have to confirm the good lampholder wire screw with the corresponding location)
Lampholder center contact with the line of fire, peripheral contacts and zero line connection, switch control FireWire
