by mheo soriano

4.) Observe safety measures.

Turn off the main switch of your power supply before you begin wiring. Keep your hands dry and if possible wear rubber gloves.

Never work in the dark, use a flashlight or any battery operated light.
Set aside anything that may cause distraction or loss in focus.
Be careful in tying the knots and soldering, remember you are dealing with electricity here one mistake may lead to life loss or fire.

Never leave a wire un-insulated, you can apply Electrical tape to the bare wires.
Once you are done double check everything, so that you can be sure that you did not leave out on anything.