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MERCEDES BENZ S 420
MODEL YEAR(S
S 420 1994-1997
KEY T-HARNESS IMMOBILIZER
N/A N/A MERCEDES TRANSPONDER ANTI-THEFT SYSTEM, Requires 791 Bypass Module and extra Ignition Key
PART COLOR LOCATION DIAGRAM
12 VOLT CONSTANT RED (+) IGNITION SWITCH HARNESS, See NOTE *1
STARTER PURPLE (+) IGNITION SWITCH HARNESS, See NOTE *1
STARTER 2 N/A
IGNITION 1 PINK/BLACK (+) IGNITION SWITCH HARNESS, See NOTE *1
IGNITION 2 PINK/YELLOW (+) IGNITION SWITCH HARNESS, See NOTE *1
IGNITION 3 N/A
ACCESSORY/HEATER BLOWER 1 PINK/GREEN (+) IGNITION SWITCH HARNESS, See NOTE *1
ACCESSORY/HEATER BLOWER 2 N/A
KEYSENSE N/A
PARKING LIGHTS ( - ) N/A
PARKING LIGHTS ( + ) GRAY (+) and GRAY/WHITE (+) Use both, See NOTE *2 @ HEADLIGHT SWITCH, See DIAGRAM 14301_S-420_DUAL PARKING LIGHT DIAGRAM.pdf
POWER LOCK BLUE/YELLOW (TYPE B) IN EITHER KICK PANEL
POWER UNLOCK BLUE/BLACK (TYPE B) IN EITHER KICK PANEL
LOCK MOTOR WIRE N/A
DOOR TRIGGER BROWN/GRAY (-) and BROWN/RED (-) Use both, See NOTE *3 @ PIN SWITCHES 17044_S-420_(-) NEGATIVE DOOR PIN ISOLATION CIRCUIT.pdf
DOMELIGHT SUPERVISION BROWN/GRAY (-) @ DRIVERS PIN SWITCH
TRUNK RELEASE N/A
SLIDING POWER DOOR N/A
HORN BLACK/YELLOW/RED (+) @ THEFT MODULE, See NOTE *4
TACH BLACK, BLACK/WHITE or BLACK/YELLOW @ IGNITION COIL PACK
WAIT TO START LIGHT N/A
BRAKE BLACK/RED/WHITE (+) @ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM BROWN/YELLOW (-) @ THEFT MODULE, See NOTE *4
ANTI-THEFT TRANSPONDER ANTI-THEFT SYSTEM, REQUIRES 791 BYPASS MODULE AND EXTRA IGNITION KEY, See NOTE *5 TRANSPONDER @ IGNITION SWITCH TUMBLER
NOTES
NOTE *1 Remove the KNEE BOLSTER from dash to access the IGNITION SWITCH HARNESS.





NOTE *2 this vehicle uses 2 parking Light wires to connect will require 2 extra relays Part #775, to connect, See DIAGRAM





NOTE *3 the BROWN/GRAY(-) wire is at the Drivers pin switch and the BROWN/RED (-) wire is at the Drivers Rear Pin switch. You can also use the WHITE/PINK (-) for the front doors, the BROWN/PINK (-) for Rear doors at the THEFT MODULE in the trunk. When connecting to an ALARM SYSTEM use all 4 DOOR TRIGGER wires and DIODE ISOLATE, to connect, See DIAGRAM.





NOTE *4 the THEFT MODULE is located in the trunk behind the liner on the Right side.





NOTE *5 the 791 bypass module will only work on vehicles that use the SWITCHBLADE KEYS on vehicles that use the SMART KEY the bypass will not work.
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