Current location - Health Preservation Learning Network - Slimming men and women - The wiring diagram of 4-pin 12v starting relay zm connection can be said to be the best in principle.
The wiring diagram of 4-pin 12v starting relay zm connection can be said to be the best in principle.
As shown in the figure, 85 and 86 are the input terminals (small current input) of the relay start signal.

87 is the output end (high current outflow end), and 83(30) is the high current source (usually connected to the positive electrode of the battery).

When there is a signal (power on) at 85 and 86, the relay coil is attracted to connect 87 and 83(30), so that a large current will flow from 87.