Lead placement for a five-lead ecg system ?

Standard: Most typical 5 leads are: right arm, left arm, right leg, left leg, v1 lead. For convenience, they are usually put on the torso. Put the arm leads by the corresponding clavicle. Put the leg leads at the inferior edge of ribs on each side. Put the v1 lead just to the right of the sternal border at the 4th intercostal space.

Usual: White to the right arm, black to the left arm, red to the left leg, green to the right leg, usually the v lead is brown which goes to the precordial placements.