For owners of 2003-2007 GM trucks and SUVs, factory lighting configurations can often feel restrictive, especially when navigating dark rural roads or off-road trails. The Lighting Fully Open Module, often referred to as the "6-High Mod," is designed to solve this by allowing the high beams, low beams, and fog lights to operate simultaneously. Our editorial team at KouponClicks has analyzed the features and user feedback for this popular modification to help you determine if it is the right upgrade for your vehicle.
Based on our research of the latest lighting features, this module is a specialized circuit board designed specifically for the GMT800 platform (including the Silverado, Sierra, Tahoe, and Yukon). Under standard factory settings, when a driver activates their high beams, the low beams and fog lights typically turn off. This module overrides that sequence, ensuring that all six forward-facing lights—high beams, low beams, and fogs—remain illuminated at once, providing a massive wall of light.
Our research indicates that this module is precision-engineered for the 2003-2007 GM classic body style. This includes:
In our curation of customer feedback, several recurring themes emerged regarding the performance of the Lighting Fully Open Module:
Durability: Users frequently report that the module is built with high-quality components that withstand the heat of the engine bay. Unlike DIY "jumper wire" methods, this professional module is seen as a more stable and reliable long-term solution.
Visibility Transformation: Many reviewers have noted that the difference in nighttime visibility is "night and day." By maintaining the low beams and fog lights, the area immediately in front of the bumper stays illuminated, which is often lost when using high beams alone on stock setups.
Ease of Use: We found that most buyers appreciate that the module does not require any manual switching. Once installed, it works automatically whenever the high beam lever is pulled.
According to our research-based curation of this product, the Lighting Fully Open Module is a highly effective and affordable upgrade for the 2003-2007 GM lineup. It offers a professional-grade solution to a common lighting limitation. While we always recommend checking local regulations regarding the number of simultaneous forward lights allowed on public roads, our analysis suggests that for off-road and rural use, this module provides a significant boost to driver confidence and safety.
If you are looking to modernize the lighting performance of your classic GM truck, our research indicates this 6-high mod is one of the most straightforward and impactful modifications available on the market today.
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