Wiring Diagram Relay 85 And 86 Use

Terminal 86 from one side of momentary switch. Note that each pin is numbered. Terminal 87 to terminal 86 and relay 2 terminal 86.

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Pin 30 is the common switch.

Wiring diagram relay 85 and 86 use. Terminal 85 connect to a suitable earthing point on the vehicle chassis. This is the bottom view of a typical single pole double throw spdt bosch type relay showing the pin configuration. 4 pin relays use 2 pins 85 86 to control the coil and 2 pins 30 87 which switch power on a single circuit. Looking at the diagram we see the pinout of a typical 12v relay.

Ti understand its operation consider the relay as having two sections the coil pins 85 and 86. It doesn t matter which way round. 87 and 87a are the two contacts to which 30 will connect. Attach one spade connector to relay terminal 86 coil.

85 and 86 are the coil pins while 30 87 and 87a are the switch pins. To test the relay itself take two wires each about a foot long with a female spade terminal at one end and stripped at the other end. This relay kit is designed for muli purpose use. Pins 85 and 86 are on the trigger activate circuit which is usually activated by a live on one pin and a switched earth gnd on the other or a gnd on one and a switched live on the other.

Terminal 30 from 12v ignition switch ign position. 85 and 86 are the coil pins while 30 87 and 87a are the contact pins. Attach the other to relay terminal 85 coil ground. Pin 86 is for the 12 volt positive lead and pin 85 is for ground.

If the coil is not activated 30 will always be connected to 87a. Note that each pin is numbered. If the coil is not activated 30 will always be connected to 87a. Terminal 86 from relay 1 terminal 86.

Numbers of a relay looking at the diagram we see the pinout of a typical 12v relay. Numbers of a relay. And the contacts pins 30 87 and 87a. Touch the 86 wire to the battery s positive post and the 85 wire to the battery s negative post.

When negative ground is supplied to one end of the coil and positive voltage is supplied at the other end the coil creates a magnetic field which activated the relay. It moves between pins 87 normally open and 87a normally closed. This supply also feeds the other side of the momentary switch. 30 85 87a 87 86 relay logic pink red black orange relay trigger 12v wire to a fused ignition source relay trigger ground wire to a good chassis ground to component basic relay wiring brake switch relay wiring pink red black orange to brake switch non hot side to a good chassis ground to turn.

87 and 87a are the two contacts to which 30 will connect.