Where does the fusible link go?

They are placed in-line between delicate harnesses and large sources of electrical current in your car—between the battery and alternator, for example. These links must transmit high-current electricity, but also protect the rest of the electrical system from dangerous spikes that could cause a fire.

Where do the wires go on a starter relay?

In case the starter relay has 3 terminals only, connect the thin wire to one of the bolts that secure the relay to the body of the car. Or just anywhere, provided it touches the casing of the starter relay. This is the ground wire, and the negative battery connection, so it can connect anywhere on the body of the car.

What is the difference between a fuse and a fusible link?

Again, a fusible link's function is very similar to a fuse. It's designed to fail before your wiring harness melts to goo. As a general rule, a fusible link is made of wire that is four gauges higher (smaller) than the rest of the circuit, making it the weakest link in your electrical chain.

What is the purpose of a fusible link?

A fusible link is a short piece of insulated low-voltage cable within an automotive wiring harness that is designed to protect the harness in applications where a fuse is unsuitable.

How does a fusible link go bad?

Fusible links work off of heat in the wire (resistance). Too high a resistance, the wire in the fusible link melts and creates an open (like blowing a fuse). It is possible that after many years of use and power through the wire that it indeed didn't have the same load capacity as a brand new one.

What is a fusible link valve?

Fusible link valves are also known as thermal shut-off valves. They are an automatic shut-off valve that cuts of any gas or liquid in the pipeline once a fire is present.

Do I need a fusible link between alternator and battery?

Fusible link in the alternator charge wire would protect against a dead short in the alternator. Unusual, but it could happen. These links protect the car from the battery current. They are designed to go open in response to a dead short, without setting the rest of the car on fire or melting the harness.

What connects to the starter solenoid?

Typically, a starter-mounted solenoid has three terminals with three connections: The “B” or “battery” terminal: The terminal that connects the solenoid directly to the positive battery cable. The “S” or “start” terminal: The terminal that receives power from the ignition switch.

Does it matter which wire goes where on a solenoid?

If they are connected to a terminal, you are good to go. The small gage wires on the small terminal are the same as the small gage wires on the larger terminal. It does not matter because it isn't specified in the instruction manual.

Where do the wires go on a solenoid?

Connect the control wire to the small control circuit terminal on the left-hand side of the solenoid. It is usually marked with the letter "S" (see Tips below).

Are fusible links color coded?

Color coding is standard almost across the board for different types of automotive blade fuses, with two notable exceptions: 25 A and 35 A maxi fuses. These are gray and brown, respectively—colors that are also used for lower-amperage fuses.

Are ATO and ATC fuses interchangeable?

ATO fuses and ATC fuses are regular-sized automotive blade fuses. They are interchangeable, provided the amperage rating is the same. The housing can be open or closed, but neither is sealed or waterproof. ... Transparent housing for easy identification of blown fuse.

How do you measure a fusible link?

Typically, a given harness segment is protected by fusible link that is four gauge numbers smaller. A 14-gauge wire would be protected by an 18-gauge fusible link. A 6-gauge wire would be protected by a 10-gauge link, and so on. Odd number wire gauge sizes like 19, 15, 13 and 11 are counted when sizing a link.

Where does the fusible link go on a starter relay?