Cobra 4160 Alarm Wiring Diagram Portable -

Indicator/Turn signal outputs. These provide the flashes when arming or disarming.

Permanent +12V battery feed. Connect to a fused constant power source.

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 cobra 4160 alarm wiring diagram

The 4160 series belongs to the "Bridge" family of Cobra alarms. It features a compact siren/control unit usually mounted in the engine bay. Unlike modern CAN-bus systems, this is an analog alarm, meaning every connection requires physical splicing into the vehicle's electrical loom. ⚡ Main Wiring Loom Breakdown

Ignition sense (+12V switched). This tells the alarm when the engine is running. Indicator/Turn signal outputs

Most installers use the Violet and Grey wires for lock/unlock signals.

The primary harness typically consists of a multi-pin connector. While wire colours can occasionally vary by region, the standard Cobra 4160 pinout follows this logic: Power and Ground Connect to a fused constant power source

The 4160 has an internal Ni-Cd battery. If the alarm triggers randomly, this battery is likely dead and needs replacement.

Position the siren unit facing downwards in the engine bay to prevent water from pooling inside the horn.

Negative door trigger. Connect to the interior light switch circuit (ground when door opens). Exterior Signaling