The XDP HD Grid Heater Relay Fusible Link Wire (For Single Relay) XD442 is a direct replacement for Dodge Ram 5.9L/6.7L diesel trucks equipped with a single grid heater relay. Designed to restore proper power delivery to the grid heater system, this wire helps ensure dependable cold starting and proper grid heater operation. Built to match factory function and routing, the XD442 features an integrated fuse link for circuit protection and is constructed from heavy-duty 6-gauge wire to handle the high current demands of the grid heater system. Features and Benefits: Direct-Fit ReplacementHeavy-Duty 6-Gauge Wire ConstructionIntegrated Fuse Link For Circuit ProtectionDesigned For Trucks With A Single Grid Heater RelayDirect Replacement Battery-To-Relay Grid Heater WireRestores Proper Power Delivery To The Grid Heater SystemIdeal For Repairing Damaged, Corroded, Or Heat-Damaged Factory WiringFitment Notes: This wire is intended for trucks with one grid heater relay. Always verify your vehicle's relay configuration and year range before ordering. Details: