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MERCEDES BENZ 300 E
MODEL YEAR(S
300 E 1986-1993
KEY T-HARNESS IMMOBILIZER
N/A N/A N/A
PART COLOR LOCATION DIAGRAM
12 VOLT CONSTANT RED (+) @ IGNITION SWITCH HARNESS, NOTE #1
STARTER PURPLE (+) @ IGNITION SWITCH HARNESS, NOTE #1
STARTER 2 N/A
IGNITION 1 PINK/RED (+) @ IGNITION SWITCH HARNESS, NOTE #1
IGNITION 2 PINK/YELLOW (+) (2ND ACCESSORY) @ IGNITION SWITCH HARNESS, NOTE #1
IGNITION 3 N/A
ACCESSORY/HEATER BLOWER 1 PINK/GREEN (+) @ IGNITION SWITCH HARNESS, NOTE #1
ACCESSORY/HEATER BLOWER 2 N/A
KEYSENSE N/A
PARKING LIGHTS ( - ) N/A
PARKING LIGHTS ( + ) GREEN/WHITE (+) and GRAY (+) Use both, See NOTE #2 @ HEADLIGHT SWITCH 14301_300-E_DUAL PARKING LIGHT DIAGRAM.pdf
POWER LOCK BLUE or GREEN, See NOTE #3 See DIAGRAM 2577_300E_VACUUM LOCKS.pdf
POWER UNLOCK LOCK/UNLOCK uses same wire!
LOCK MOTOR WIRE N/A
DOOR TRIGGER BROWN/GRAY (-) and BROWN/GRAY/BLACK (-) Use both, See NOTE #4 @ PIN SWITCHES 2577_300E_(-) NEGATIVE DOOR PIN ISOLATION CIRCUIT.pdf
DOMELIGHT SUPERVISION BROWN/GRAY (-) @ PASSENGERS PIN SWITCH
TRUNK RELEASE N/A
SLIDING POWER DOOR N/A
HORN BLACK/YELLOW/PINK (+) @ STEERING COLUMN HARNESS
TACH BLACK (AC) @ IGNITION COIL
WAIT TO START LIGHT N/A
BRAKE BLACK/RED/WHITE (+) @ BRAKE PEDAL SWITCH
FACTORY ALARM DISARM GREEN/YELLOW (-) @ DIRVERS DOOR HARNESS or THEFT MODULE, See NOTE #5
ANTI-THEFT N/A
NOTES
NOTE#1: You access the IGNITION SWITCH HARNESS by pulling the INSTRUMENT CLUSTER out from the FRONT of the Dash.





NOTE #2: this vehicle has 2 Parking Light wires that will require 2 extra Relays part #775, to connect, See DIAGRAM, (BLUE wire is located in a BLACK RUBBER tube whit RED/WHITE and BROWN wires coming out of the DRIVERS DOOR. Passenger side is same except it has a GREEN

wire coming out of the BLACK tube. PUMP is located UNDER the REAR SEAT on the PASSENGER SIDE.



NOTE #3: this vehicle has aVacuum 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. These wires are in a BLACK tube comming out of the Drivers Door.





NOTE #4: the BROWN/GRAY (-) is at the RIGHT PIN SWITCH is for the FRONT DOORS, the BROWN/GRAY/BLACK (-) is at the REAR PIN SWITCH is for the REAR DOORS When connecting to an ALARM SYSTEM use both DOOR TRIGGER wires and DIODE ISOLATE. to connect, See DIAGRAM





NOTE #5: the THEFT MODULE is located in the PASSENGER FOOTWELL under the carpet and behind a PLASTIC or WOOD cover against the firewall.
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