Bypassing a Non Working Dash Light Dimmer Switch

Jan 11, 2022


Welcome to Grafco Electric's informative guide on bypassing a non working dash light dimmer switch. If you're facing problems with your dash lights not dimming properly, our step-by-step instructions will help you troubleshoot and resolve the issue effectively.

Why is the Dash Light Dimmer Switch Important?

The dash light dimmer switch plays a crucial role in controlling the brightness of the instrument panel lights in your vehicle. It allows you to adjust the illumination level to ensure optimal visibility without causing any distractions.

Step-by-Step Guide to Bypassing a Non Working Dash Light Dimmer Switch

Step 1: Identify the Problem

Before bypassing the dash light dimmer switch, it's important to determine if the switch is truly the cause of the issue. Check for any loose connections, blown fuses, or wiring problems related to the dimmer switch. Ensure that the switch itself isn't physically damaged or worn out.

Step 2: Disconnect the Power Source

Prior to working on any electrical components in your vehicle, always disconnect the power source to avoid any potential harm. Locate the fuse box and switch off the corresponding fuse or remove the relevant battery cable.

Step 3: Access the Dash Light Dimmer Switch

The exact location of the dimmer switch may vary depending on your vehicle make and model. Typically, it can be found either below the steering column or integrated into the headlight switch on the dashboard. Consult your vehicle's manual or seek online resources for specific instructions.

Step 4: Remove the Dash Light Dimmer Switch

Once the dimmer switch is accessible, carefully remove it from its mounting location using the appropriate tools. Be cautious not to damage any surrounding components or wiring during the removal process.

Step 5: Identify the Necessary Wires

Inspect the dimmer switch and identify the necessary wires that control the dash light dimming function. These wires are usually color-coded, with a common color being gray or green.

Step 6: Bypassing the Dimmer Switch

Using electrical connectors or appropriate methods, connect the wires necessary for dash light dimming together. This bypasses the non working dimmer switch and allows the dash lights to function without it. Ensure secure connections and proper insulation to prevent any electrical shorts or hazards.

Step 7: Test the Dash Light Dimming Function

After bypassing the dimmer switch, reconnect the power source to test the newly connected wires. Gradually adjust the dimming control to verify if the dash lights respond as expected. If the dimming function works properly, you have successfully bypassed the non working dash light dimmer switch.

Contact Grafco Electric for Professional Assistance

If you encounter any difficulties or require expert guidance during the process of bypassing a non working dash light dimmer switch, don't hesitate to reach out to Grafco Electric. Our experienced technicians are ready to assist you with any electrical issues in your vehicle.


In conclusion, bypassing a non working dash light dimmer switch can be a feasible solution to regain control over your dash lighting. Follow our detailed guide provided by Grafco Electric to troubleshoot and fix the issue effectively. Remember to prioritize safety while working with electrical components, and seek professional assistance if needed.


It's important to note that performing any modifications or repairs on your vehicle's electrical system may void warranties or have potential risks. Only proceed with the bypassing procedure if you have sufficient knowledge and confidence in your abilities. Grafco Electric takes no responsibility for any damages or injuries that may occur.