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Associated wiring diagrams for the cruise control system of a 1990 Honda Civic. Power Windows, Cruise Control, Interlock Unit, Instrument Cluster, Gear Select, Defog Switch, Dome Light, Computer Engine Control (1.6L) ...(1990_Honda_Civic_Cruise_Control.pdf)
The OEM gray/black door switch wire will not always work on some alarm installs for a door trigger due to a factory diode. The attached file shows how to obtain a clean ground and +12V feed on a 1995 F-Body (Camaro/Firebird) using two 5-pin relays. In 1996+, the function was handled by a body control module so this would not apply. This should work on 1993-95 cars. ...(Door_trigger_Dual_SPDT.pdf)