The Medallion MUX Switch Module (Left) is a digital multiplex (MUX) dash control/display module designed for the left-side position in compatible Medallion gauge and dash systems. Built for clean integration, it provides a central LCD viewing area and tactile push-button control for navigating and operating supported dash functions. Brand: Medallion Product type: Digital MUX switch / dash control module Position: Left side (labeled “LEFT”) Medallion part number: 1539-10279-00 Interface: LCD screen with multi-button keypad Connectivity: Multi-pin electrical connector (rear) Mounting: Integrated mounting ears with bolt holes Fitment note: This is a left-side module and is not interchangeable with right-side versions on many setups. Match by part number 1539-10279-00 and existing dash layout before ordering. Common questions: Is this the left “scrollable” module? Yes—this unit is identified as “Scrollable Left” and marked “LEFT.” How do I confirm compatibility? Verify the part number on your current module and confirm your Medallion dash system uses a left-position MUX switch module.