What is the difference between 4 pin and 5 pin relay?

What is the difference between 4 pin and 5 pin relay?

The difference between a 4 and 5 pin relay is that a 4 pin relay is used to control a single circuit, whereas a 5 pin relay switches power between two circuits. 4 pin relays use 2 pins (85 & 86) to control the coil and 2 pins (30 & 87) which switch power on a single circuit.

What are the different types of automotive relays?

Types of Automotive Relays

• Change Over Relays. This is the most common type of relay.
• Normally Open Relays.
• Potted Relays.
• Flasher Relays.
• Thermal (Standard) Flasher.
• Electro-Mechanical Flasher.
• LED Flashers.
• Wig-Wag Flashers.

What are the numbers on a relay?

Numbers of a Relay Note that each pin is numbered. 85 and 86 are the coil pins while 30, 87, and 87a are the switch pins. 87 and 87a are the two contacts to which 30 will connect. If the coil is not activated, 30 will always be connected to 87a.

How much does a relay cost?

How Much Does a Relay Cost? An aftermarket relay usually costs around $50 to $250. Prices can vary depending on various factors, like its brand, quantity, product fit, and condition. Labor costs for this type of replacement usually range from $30 to $60.

What are the 2 circuits of a relay called?

Relays involve two circuits: the energizing circuit and the contact circuit. The coil is on the energizing side; and the relays contacts are on the contact side. When a relays coil is energized, current flow through the coil creates a magnetic field.

What is an automotive electrical relay?

Automotive Relays A car relay switch is used to enable a low amperage circuit to switch on and off a higher amperage circuit like headlights, relays are also used to switch multiple things at the same time using one output.

What does 85 mean on a relay?

Relay Guide