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Vehicle Wiring Details for your
1991-1993 Buick Roadmaster Wiring Diagram
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Listed below is the vehicle specific wiring diagram for your car alarm, remote starter or keyless entry installation into your 1991-1993 Buick Roadmaster . This information outlines the wires location, color and polarity to help you identify the proper connection spots in the vehicle. Please be sure to test all of your wires with a digital multimeter before making any connections. More information on using a multimeter and testing wires please see our Technical Support Area.


 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED (+)   @ IGNITION SWITCH HARNESS
 STARTER  PURPLE (+)  @ IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  PINK (+)  @ IGNITION SWITCH HARNESS
 IGNITION 2  N/A  
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  ORANGE (+)  @ IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  N/A  
 PARKING LIGHTS ( + )  BROWN (+)  @ HEADLIGHT SWITCH or DRIVERS KICK PANEL
 POWER LOCK  LIGHT BLUE (TYPE A)  IN DRIVERS KICK PANEL
 POWER UNLOCK  BLACK (TYPE A)  IN DRIVERS KICK PANEL
 DOOR TRIGGER  WHITE (-)  @ UNDER DASH LIGHT
 DOMELIGHT SUPERVISION  USE DOOR TRIGGER, (Requires #775 Relay)  
 TRUNK RELEASE  BLACK (+)  @ TRUNK RELEASE SWITCH
 SLIDING POWER DOOR  N/A  
 HORN  BLACK (-)  @ STEERING COLUMN HARNESS
 TACH  PURPLE/WHITE or WHITE (AC)  @ IGNITION COIL or DISTRIBUTOR
 WAIT TO START LIGHT  N/A  
 BRAKE  WHITE (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   N/A  
 ANTI-THEFT  N/A  
 EXTRA INFORMATION
 
 
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