Cobra 3865 Manual
[ +12V Battery Source ] │ ▼ [ 15A/25A Fuses ] │ ┌────────────────────────┴────────────────────────┐ │ │ ▼ ▼ [ Cobra 3865 Alarm ECU ] <──(Data/Power Link)──> [ Siren Unit ] │ (Far away from heat) (Engine Bay - Pointing Down) ├──> Ultrasonic Transducers (A-Pillars) ├──> Emergency LED / Pushbutton (Dashboard) ├──> Bonnet Switch / Door Pins └──> Ignition Immo Circuits (Dual-Line) 1. Alarm Unit (ECU)
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The manual includes detailed electrical diagrams (similar to the Cobra 3860 layout) identifying connections for immobilizers, turn signals, and door triggers. [ +12V Battery Source ] │ ▼ [
