Cobra 4160 Alarm Wiring Diagram May 2026

The rain hammered against the corrugated metal roof of Elias’s workshop, a rhythmic drumming that usually helped him focus. But today, the sound was just another distraction. On his workbench sat a pristine 1994 BMW E36, and in his grease-stained hands was a tangled nest of black wires belonging to a Cobra 4160 car alarm.

If your alarm came with a separate door lock harness (4 thin wires: two blue, two green), those connect to an aftermarket relay pack, not directly to car wires. cobra 4160 alarm wiring diagram

Ignition sense. Connect to a wire that provides 12V only when the ignition is in the "ON" or "Cranking" position. Blue Wire: Direct contact circuit for the boot (trunk) switch. Blue/Pink Wire: Direct contact circuit for the driver's door switch. Indicators & Sirens Yellow Wires (x2): The rain hammered against the corrugated metal roof

• Most Japanese/European cars: Use Blue (12-pin #2) to door pin.
• Old Ford/GM: Use Green (12-pin #3).