2. Check the continuity of the circuit between the clamps. The circuit must be continuous between pins 1 and 2 when 12V is applied to pins 4 and 3. If no voltage is applied, the circuit should be open.
2. Check the continuity of the circuit between the clamps. The circuit must be continuous between pins 1 and 2 when 12V is applied to pins 4 and 3. If no voltage is applied, the circuit should be open.