Permanent +12V battery feed. Connect to a fused constant power source.
Ignition sense (+12V switched). This tells the alarm when the engine is running.
Negative output for additional sirens or modules (if applicable). 🔒 Central Locking Connections cobra 4160 alarm wiring diagram
The Cobra 4160 is a classic, modular alarm system known for its reliability in older vehicles. Because these units are often found in secondhand cars or older installs, finding a clear wiring map is essential for troubleshooting or reinstallation. 🏁 Overview of the Cobra 4160
Negative door trigger. Connect to the interior light switch circuit (ground when door opens). Exterior Signaling Permanent +12V battery feed
Most installers use the Violet and Grey wires for lock/unlock signals.
You may need additional relays if your car uses a "positive trigger" or "vacuum" locking system, as the 4160 is natively set for "negative trigger" pulses. 🛠 Installation Tips & Safety This tells the alarm when the engine is running
Position the siren unit facing downwards in the engine bay to prevent water from pooling inside the horn.
The Cobra 4160 uses a 6-pin secondary harness or internal relays to manage door locks.