GoToLed Light GTL-4FT
GoToLed Light 4FT T8 LED Tube Light Instruction Manual
Model: GTL-4FT
Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your GoToLed Light 4FT T8 LED Tube Light. This product is designed as an energy-efficient replacement for traditional fluorescent tube lights in various settings. It offers adjustable wattage and color temperature settings for versatile lighting solutions.

Image: GoToLed Light 4FT T8 LED Tube Lights.
Safety Information
Please read all safety instructions before installation and use. Failure to follow these instructions may result in electric shock, fire, or other hazards.
- Ensure power is disconnected at the circuit breaker before installation or maintenance.
- Installation should be performed by a qualified electrician if you are unsure about wiring procedures.
- Do not use with dimmers unless explicitly stated as compatible. This product is not listed as dimmable in the specifications.
- Do not disassemble or modify the LED tube light.
- Operate within the specified voltage range (120-277V).
- This product is rated for damp locations.
Product Features
The GoToLed Light T8 LED Tube Light offers several advanced features:
- Tunable Color Temperature (CCT): Select from 3000K (Soft White), 4000K (Cool White), 5000K (Bright White), or 6500K (Daylight) using an integrated switch.
- Tunable Wattage: Adjust power consumption and brightness to 12W (1560 lumens), 15W (1950 lumens), 18W (2340 lumens), or 22W (2860 lumens) via a switch.
- Universal Installation (Type A+B): Compatible with existing electronic ballasts (Plug & Play) or direct wire (Ballast Bypass) for single-end or double-end connections.
- Long Lifespan: Rated for over 50,000 hours of operation.
- Durable Design: Features a frosted, shatterproof cover and an aluminum heat sink for efficient heat dissipation.

Image: Product Specifications Overview.
Installation Instructions
These LED tube lights support two primary installation methods: Plug & Play (Ballast Compatible) and Ballast Bypass (Direct Wire). Always ensure power is OFF before beginning installation.
Method 1: Plug & Play (Ballast Compatible)
This method uses your existing electronic ballast. No rewiring of the fixture is required.
- Turn off power: Disconnect power to the fixture at the circuit breaker.
- Remove existing fluorescent tubes: Carefully remove the old fluorescent tubes from the fixture.
- Check ballast compatibility: Refer to the Ballast Compatibility List below to ensure your existing ballast is compatible.
- Install LED tube lights: Insert the GoToLed Light T8 LED tube lights into the existing lamp holders (tombstones). Ensure they are securely seated.
- Restore power: Turn power back on at the circuit breaker.
Note: No need to change shunted lamp holders for this method.
Method 2: Ballast Bypass (Direct Wire)
This method bypasses the existing ballast, wiring the LED tube lights directly to the main power supply. This can be done with single-end or double-end connections.
- Turn off power: Disconnect power to the fixture at the circuit breaker.
- Remove existing fluorescent tubes and ballast: Carefully remove the old fluorescent tubes and then remove the existing ballast from the fixture.
- Wire the fixture:
- Single-End Connection: Wire the live (L) and neutral (N) wires to one end of the fixture's lamp holders. The other end of the fixture will not be wired. You will need non-shunted lamp holders for this configuration.
- Double-End Connection: Wire the live (L) wire to one end of the fixture's lamp holders and the neutral (N) wire to the other end. This can work with existing shunted lamp holders.
Refer to the wiring diagrams below for visual guidance.
- Install LED tube lights: Insert the GoToLed Light T8 LED tube lights into the lamp holders. Ensure they are securely seated.
- Restore power: Turn power back on at the circuit breaker.

Image: Universal Installation Options.

Image: Wiring Diagrams for Ballast Install and Ballast Bypass.
Operating Instructions
Your GoToLed Light T8 LED Tube Light features adjustable settings for both color temperature and wattage.
Adjusting Color Temperature (CCT)
Each tube light has a small switch located on its body to select the desired color temperature. The available options are:
- 3000K: Soft White
- 4000K: Cool White
- 5000K: Bright White
- 6500K: Daylight
Adjust the switch to your preferred setting before or after installation. The change will take effect immediately upon power cycling the light if adjusted while powered on, or upon initial power-up if adjusted before installation.

Image: CCT Changeable Feature Demonstration.
Adjusting Wattage and Brightness
A separate switch on the tube light allows you to select the wattage, which directly impacts the brightness. The available settings are:
- 12W: 1560 Lumens
- 15W: 1950 Lumens
- 18W: 2340 Lumens
- 22W: 2860 Lumens (Brightest setting)
Select the desired wattage based on your lighting needs and room size. Adjust the switch to your preferred setting before or after installation. The change will take effect immediately upon power cycling the light if adjusted while powered on, or upon initial power-up if adjusted before installation.
Maintenance
The GoToLed Light T8 LED Tube Light requires minimal maintenance due to its long lifespan and durable construction.
- Cleaning: Ensure power is off before cleaning. Use a soft, dry, or slightly damp cloth to wipe the surface of the tube. Do not use harsh chemicals or abrasive cleaners.
- Inspection: Periodically inspect the tubes and connections for any signs of damage or loose wiring. If any issues are found, disconnect power and consult a qualified electrician.
- Replacement: With a lifespan of over 50,000 hours, frequent replacement is not anticipated. If a tube needs replacement, ensure it is replaced with a compatible GoToLed Light T8 LED Tube Light.
Troubleshooting
If you encounter issues with your LED tube light, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn on. | No power to the fixture, incorrect wiring, incompatible ballast (for Plug & Play), faulty tube. |
|
| Light flickers. | Incompatible ballast, loose connection, voltage fluctuations. |
|
| Incorrect color temperature or brightness. | Switch set incorrectly. |
|
| Tube makes a popping sound and stops working. | Incorrect wiring (e.g., wiring both ends in a single-end bypass setup), voltage surge, internal component failure. |
|

Image: Benefits of GoToLed Light T8 LED Tube Lights.
Specifications
| Brand | GoToLed Light |
| Model Name | GTL-4FT |
| Light Type | LED |
| Bulb Shape Size | T8 |
| Bulb Base | G13 (2-pin) |
| Wattage (Tunable) | 12W / 15W / 18W / 22W |
| Brightness (Tunable) | 1560 Lumens (12W), 1950 Lumens (15W), 2340 Lumens (18W), 2860 Lumens (22W) |
| Color Temperature (Tunable) | 3000K / 4000K / 5000K / 6500K |
| Voltage | 120-277V |
| Lifespan | >50,000 Hours |
| CRI | >80 |
| Beam Angle | 120 Degrees |
| Material | Aluminum (heat sink) |
| Cover Type | Frosted |
| Indoor/Outdoor Usage | Indoor (Damp Location Rated) |
| Certifications | UL Listed, UL Classified, DLC Listed |
Ballast Compatibility List (for Plug & Play Installation)
For Plug & Play installation, ensure your existing electronic ballast is listed below. If your ballast is not listed, consider the Ballast Bypass installation method.

Image: Compatible Ballast List.
Warranty and Support
This GoToLed Light T8 LED Tube Light is backed by a 5-year warranty. For warranty claims, technical support, or any questions regarding your product, please contact GoToLed Light customer service.
Please retain your proof of purchase for warranty purposes.
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