Automotive electrical systems are sensitive. Incorrectly tapping into an airbag (SRS) or ECU wire can cause expensive damage. Always use a digital multimeter—never a test light—to verify wires before stripping or soldering.
Negative output for additional sirens or modules (if applicable). 🔒 Central Locking Connections cobra 4160 alarm wiring diagram
Ignition sense (+12V switched). This tells the alarm when the engine is running. Automotive electrical systems are sensitive