Frequently Asked Questions About Kenworth T680 Gauges & Switches

Will these gauges and switches fit my specific T680 model year?

Most aftermarket gauges and switches for the Kenworth T680 are designed to fit model years 2013 and newer. However, there can be variations between early production models (2013-2016) and later models (2017+) due to dashboard updates. Always verify the specific year range listed in the product description, and if you have a 2013-2015 model, double-check mounting dimensions as some gauge pods may require minor modifications.

Do I need special tools or professional installation for gauge replacements?

Basic gauge replacements typically require standard hand tools including screwdrivers, socket sets, and wire crimpers. Most installations can be completed in 1-3 hours depending on complexity. However, gauges requiring new sensors (like pyrometers or boost gauges) will need additional drilling and wiring work. Switch installations are generally simpler, often using existing mounting holes. We recommend having a multimeter on hand for testing connections and following the included wiring diagrams carefully.

Are these gauges compatible with my T680's electrical system and ECM?

Most mechanical gauges will work independently of your truck's ECM, while electronic gauges may require ECM data access. Gauges designed specifically for the T680 typically include the correct connectors and are calibrated for 12V systems. For advanced electronic gauges that read ECM data, ensure they support J1939 protocol. Some older T680s may require an adapter harness for full compatibility with newer electronic gauge clusters.

What's the difference between OEM replacement and aftermarket upgrade gauges?

OEM replacement gauges match factory specifications and fit directly into existing mounting locations without modifications. Aftermarket upgrade gauges often offer enhanced features like LED backlighting, higher accuracy sensors, or additional monitoring capabilities but may require gauge pods or dash modifications. OEM replacements typically maintain warranty compliance, while aftermarket options provide more customization but should be checked against any existing warranty requirements.

How do I know if I need 2-inch or 2-1/16 inch gauges for my T680?

The Kenworth T680 uses primarily 2-1/16 inch (52mm) gauges in the main cluster. Auxiliary gauge locations may accommodate either size, but 2-1/16 inch is standard for most applications. Measure your existing gauge bezels from edge to edge to confirm - the measurement should be approximately 2.3 inches for 2-1/16 inch gauges. If adding gauges to empty switch panels or installing gauge pods, either size can work, but ensure your chosen mounting solution matches your gauge diameter.