E - Electrode, used some flat ribbon cable, used only 2 conductors. Always keep the gun pointed in a safe direction. This is the primary rule of gun safety. A safe direction means that the gun is pointed so that even if it were to go off it would not cause injury or damage. The key to this rule is to control where the muzzle or front end of the barrel is pointed at all times.
Common sense dictates the safest direction, depending on different circumstances.
Always keep your finger off the trigger until ready to shoot. When holding a gun, rest your finger on the trigger guard or along the side of the gun. Until you are actually ready to fire, do not touch the trigger. Always keep the gun unloaded until ready to use. Be absolutely sure you have identified your target beyond any doubt.