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Vehicle Wiring Details for your
1987-1993 Mercedes Benz 190 E 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 1987-1993 Mercedes Benz 190 E . 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/WHITE (+)  IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  RED/BLACK (+)  IGNITION SWITCH HARNESS
 IGNITION 2  RED/YELLOW (+)  IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  RED/GREEN (+)  IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  N/A  
 PARKING LIGHTS ( + )  GREEN/WHITE (+) and GRAY (+) Use both, See NOTE *1  @ HEADLIGHT SWITCH
 POWER LOCK  BLUE or GREEN, See NOTE *2  See DIAGRAM
 POWER UNLOCK  Same wire, See NOTE *2  See DAIGRAM
 DOOR TRIGGER  BROWN/GRAY (-) and GRAY/BLUE (-) Use both, See NOTE *3  @ PASSENGERS PIN SWITCHES or THEFT MODULE, See NOTE *4
 DOMELIGHT SUPERVISION  BROWN/GRAY (-)  @ PASSENGERS PIN SWITCHES or THEFT MODULE, See NOTE *4
 TRUNK RELEASE  N/A  
 SLIDING POWER DOOR  N/A  
 HORN  BLACK/YELLOW (+)  @ THEFT MODULE, See NOTE *4
 TACH  GREEN or GREEN/YELLOW  @ DIAGNOSTIC CONNECTOR, See NOTE *5
 WAIT TO START LIGHT  N/A  
 BRAKE  BLACK/RED (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   GREEN/YELLOW (-)  @ THEFT MODULE, See NOTE *4
 ANTI-THEFT  N/A  
 EXTRA INFORMATION
 NOTE *1 this vehicle has 2 Parking Light wires that will require 2 EXTRA Relays Part #775 to Isolate the circuit, to connect, See DIAGRAM. NOTE *2 this vehicle has a Vacuum Door Locking System that will requires 2 extra relays part #775, the wire is a the Drivers kick panel or at the pump under the rear seat, to connect, See DIAGRAM. NOTE *3 the BROWN/GRAY (-) is for the FRONT DOORS, the GRAY/BLUE (-) is for the REAR DOORS. When connecting to an ALARM SYSTEM, use both DOOR TRIGGER wires and DIODE ISOLATE, to connect, See DIAGRAM NOTE *4 the THEFT MODULE is located in the PASSENGER FOOTWELL under the carpet and behind a PLASTIC or WOOD cover against the firewall. NOTE *5 the DIAGNOSTIC CONNECTOR is covered by a BLACK round cap and is located between the LEFT FRONT HEADLIGHT and the Shock tower under the Hood.
 
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