How to Bypass Blower Motor Switch

The blower motor switch in your vehicle plays a crucial role in controlling the speed of the blower motor, which is responsible for circulating air through the heating, ventilation, and air conditioning (HVAC) system. However, there may be situations where you need to bypass the blower motor switch temporarily for troubleshooting or emergency purposes.

In this guide, we will guide you through the process of bypassing a blower motor switch safely and effectively.

Step-by-Step Guide To Bypass Blower Motor Switch:

  1. Ensure safety precautions: Before attempting any electrical work, make sure your vehicle is parked in a safe location and the engine is turned off. Disconnect the negative terminal of the battery to prevent any accidental electrical shocks.
  2. Locate the blower motor switch: The blower motor switch is typically located on the dashboard, near the climate control panel. It may be a dial, knob, or button with multiple speed settings.
  3. Access the blower motor switch connector: Once you’ve located the blower motor switch, carefully remove the trim or panel surrounding it to gain access to the wiring and connector. Use a screwdriver or trim removal tool, if necessary.
  4. Identify the power and ground terminals: Observe the wiring connections on the blower motor switch connector. Identify the power wire, usually red or orange, and the ground wire, typically black or green.
  5. Disconnect the blower motor switch: Gently unplug the connector from the blower motor switch, taking note of its original position and orientation.
  6. Prepare the bypass connection: Using electrical connectors, crimp two short lengths of wire onto the power and ground terminals of the blower motor switch connector. Ensure that the wires are securely fastened to the terminals.
  7. Establish the bypass circuit: Connect the loose ends of the newly added wires to each other. This bypasses the blower motor switch, effectively providing a continuous power supply to the blower motor.
  8. Insulate and secure the connection: To prevent any electrical short circuits, cover the exposed wire connections with electrical tape or heat shrink tubing. Ensure the connections are insulated properly and won’t come into contact with any metal surfaces.
  9. Test the blower motor: Reconnect the negative terminal of the battery. Turn the ignition on and activate the blower motor. It should start running at its maximum speed since the switch is bypassed. If the blower motor doesn’t function or behaves erratically, double-check the connections and seek professional assistance.

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How to Bypass Blower Motor Resistor

If your blower motor is not working correctly, it may be due to a faulty blower motor resistor. To bypass the blower motor resistor, you need to locate the two-wire connector located near the blower fan housing and disconnect it. Then connect one wire from the battery directly to one of the terminals on the two-wire connector, then connect a jumper wire between both terminals on the two-wire connector.

This will allow power to flow directly to your blower motor and should get it working again.

How to Bypass Blower Motor Switch


Can a Blower Motor Resistor Be Bypassed?

The blower motor resistor is an integral component of your car’s heating and air conditioning system. It helps regulate the fan speed for both the heater and air conditioner, so it is important that it works properly. But what if your blower motor resistor isn’t working?

Can you bypass it? The good news is that yes, a blower motor resistor can be bypassed in most cases. Depending on the type of vehicle you have, there are several ways to do this.

If you’re handy with tools and electronics, then you may be able to make the necessary modifications yourself; otherwise, taking your car to a qualified mechanic or auto electrician will ensure that everything gets done safely and correctly. Bypassing a faulty blower motor resistor can help get your climate control back up and running again quickly – just remember to have any underlying electrical issues checked out as well!

How Do You Reset a Blower Motor Switch?

Resetting a blower motor switch is a relatively simple process that can be done in just a few steps. First, start by turning off the power to the unit and disconnecting any electrical wires from it. Once this is done, locate the blower motor switch on your furnace or air conditioner.

The switch should look like a small plastic box with two buttons in it; one labeled “reset” and one labeled “off”. Pressing the reset button will cause an internal circuit breaker within the switch to trip, which will cut power to your unit’s blower motor until you press the reset button again. After pressing the reset button, wait for at least 30 seconds before pressing it again as this allows time for any capacitor discharge that may have occurred during powering down of your system.

Lastly, reconnect all electrical wires back onto their respective terminals on your unit and turn back on its power source to restore normal operation of its blower motor!

Can You Drive Without a Blower Motor?

No, you cannot drive without a blower motor. The blower motor is an essential component of your vehicle’s climate control system, and it serves multiple important functions. Without the blower motor, your car will not be able to properly circulate air through the interior of the cabin.

This means that you won’t have any ventilation from outside air coming in or hot air being expelled from inside during the summer months. Additionally, if there is no blower motor working then you won’t be able to use any of your other climate control features such as heaters or air conditioners. In short, driving without a functioning blower motor can put both you and your passengers at risk due to lack of airflow and potentially uncomfortable temperatures while inside your car.

It’s best to get it repaired as soon as possible so that everyone can stay safe and comfortable on their travels!

How Do I Know If My Blower Switch is Bad?

If you suspect that your blower switch may be bad, there are a few tell-tale signs to look out for. Firstly, the switch should make a clicking sound when it is turned on and off – if this sound isn’t present then the chances are that the switch is faulty. You can also test whether or not your blower switch is working by turning it on and then using an insulated screwdriver to connect two of its terminals together – if the fan turns on immediately then this indicates that the switch itself isn’t at fault.

If none of these tests work then you will need to replace the entire unit as soon as possible in order to ensure optimal performance from your heating system.


Bypassing a blower motor switch should only be considered as a temporary solution for troubleshooting purposes. It’s crucial to address the underlying issue and replace the faulty switch as soon as possible to ensure the safe and proper functioning of your vehicle’s HVAC system.

Always exercise caution and consult an expert if you’re unsure or uncomfortable working with electrical components. Your safety and the integrity of your vehicle’s electrical system should be the top priority.

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