Note: I assume you mean the Cobra 4160 vehicle alarm system (12V car alarm). Below is a concise wiring reference for common connections; verify against your specific unit's manual and vehicle wiring before installation.
SIREN
Siren Red ---- Brown (12-pin #1). Siren Black ---- Chassis Ground. cobra 4160 alarm wiring diagram
For high-resolution PDFs of similar Cobra wiring architectures, refer to technical archives like the Cobra 8185 Fitting Guide or the Cobra 8510 Immobilizer Diagram, which share many of the same color-coding conventions as the 4160. Cobra 4160 alarm — quick wiring guide Note:
Connect these to the left and right indicator (flasher) lamp positive feed wires. Yellow/Blue Wire: Dedicated connection to the siren/immobilizer code wire. Accessories Brown Wire: Siren Positive Wire (Red): Connects to the siren's