OEM Freightliner Drive/Marker Light Module - New Cascadia 2018-2025 LED Headlight Control - ZKW 1040.001.0920 66-01405-030

Fix a Cascadia headlight that has gone half dark without buying a whole lamp assembly. This is the genuine Freightliner Drive/Marker Light Module, the OEM control unit that drives the daytime running lamp, turn signal and marker functions of the New Cascadia LED headlight system. When one of those sections goes dark, flickers, or throws a lamp out fault while the bulbs and the wiring test good, this module is the part to check, and replacing it restores correct lighting operation without swapping the entire headlamp. We stock genuine Freightliner electrical parts right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide. The Part That Actually Failed: The Cascadia Light Module Advantage The module sits inline with the headlight assembly and regulates the voltage and switching the LED segments need. That is why a failed module looks exactly like a failed headlight from the driver's seat: a dead daytime running lamp, a flickering marker strip, or a turn signal that will not light, all with good bulbs and good wiring behind it. Diagnosing that as a headlamp failure is an expensive mistake, because a New Cascadia LED headlight assembly costs many times what the control module does. This is the genuine Freightliner part rather than a look-alike, which matters on a component whose whole job is regulating voltage to an expensive LED assembly. It is the direct answer for the highly searched numbers 66-01405-030 and ZKW 1040.001.0920. Fitment is the Freightliner Cascadia (P4) 2018-2025. At FleetPro Parts & Tires we would rather sell you the module that failed than the headlamp that did not, so check this part first when a Cascadia headlight section quits and the harness tests clean. Vehicle Fitment & Compatibility This genuine OEM control module is intended for the following commercial application: Make/Model: Freightliner Cascadia (P4) 2018-2025 System: New Cascadia LED headlight system, drive and marker control Function: Daytime running lamp, turn signal and marker lighting Installation: Wires inline with the headlight assembly Component Group: Exterior Lighting / Headlight Control Modules Direct Replacement & Cross-Reference Numbers: This genuine Freightliner module serves as a direct replacement for the following part numbers: Freightliner Interchange: 66-01405-030 ZKW Interchange: 1040.001.0920 Technical Specifications Component Type: LED headlight control module Function: Controls daytime running lamp, turn signal, and marker lighting Operation: Regulates voltage and switching to the LED light segments Installation: Inline with the headlight assembly Fitment: Freightliner Cascadia (P4) 2018-2025 Condition: New Warranty: 1-Year FleetPro Warranty Brand: Freightliner (Distributed by FleetPro Parts & Tires)