Look at the switch for the terminals. This differs depending if you have a standard surface element or a dual ring element(dual burner). But, it will be labeled.

In this case, the L1 to H1 and L2 to H2 terminals will be checked. (L=line, H=heat). Black goes on L and Red goes on H. The position may differ depending on your switch. Read the label on your switch.

Once you've figured that out, make sure to turn your heat dial to HI