What Does the Resistor Do on a Golf Cart Solenoid

What Does the Resistor Do on a Golf Cart Solenoid?

If you own a golf cart, you may have come across the term “resistor” when discussing the solenoid. But what exactly does the resistor do on a golf cart solenoid? Let’s dive into the details and understand its role in the functioning of your golf cart.

A solenoid is an essential component of a golf cart’s electrical system. It acts as a switch, controlling the flow of electricity from the battery to the motor. The solenoid consists of a coil of wire, an electromagnetic switch, and a set of contacts. When the solenoid is activated, it allows the battery power to flow to the motor, enabling the cart to move.

Now, let’s focus on the resistor. The resistor is a small component attached to the solenoid. Its primary function is to limit the current flowing through the solenoid coil. When the solenoid is activated, a large amount of current passes through the coil, creating a magnetic field that pulls the switch closed. However, this sudden surge of current can cause arcing across the contacts, leading to premature wear and failure.

To prevent this, the resistor is placed in series with the coil. It acts as a current limiter, reducing the amount of current flowing through the coil when the solenoid is energized. By limiting the current, the resistor helps protect the contacts from arcing and extends their lifespan.


Q: Do all golf carts have a resistor on the solenoid?

A: No, not all golf carts have a resistor on the solenoid. The presence of a resistor depends on the specific make and model of the golf cart. Some carts, especially older ones, may not have a resistor. However, many modern golf carts are equipped with a resistor to protect the solenoid contacts.

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Q: Can I remove the resistor from my golf cart solenoid?

A: It is not recommended to remove the resistor from your golf cart solenoid. The resistor plays a crucial role in preventing arcing and prolonging the lifespan of the solenoid contacts. Removing the resistor can lead to excessive arcing, resulting in faster wear and potential failure of the solenoid.

Q: How do I know if the resistor on my solenoid is faulty?

A: If you notice arcing or sparking when you activate the solenoid, it could indicate a faulty resistor. Excessive wear on the solenoid contacts, frequent solenoid failures, or intermittent operation of the cart can also be signs of a faulty resistor. If you suspect a problem with the resistor, it is recommended to have it inspected and replaced if necessary by a qualified technician.

Q: Can a bad resistor cause the solenoid to fail?

A: Yes, a faulty resistor can contribute to solenoid failure. If the resistor is not functioning properly, it may not limit the current adequately, leading to increased arcing and wear on the solenoid contacts. Over time, this can cause the contacts to deteriorate, resulting in solenoid failure.

In conclusion, the resistor on a golf cart solenoid plays a vital role in protecting the contacts from arcing and premature wear. It limits the current flowing through the solenoid coil when activated, ensuring the smooth operation and longevity of the solenoid. It is important to understand the function of the resistor and ensure its proper functioning to avoid potential issues with the solenoid.