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Vehicle Wiring Details for your
2007-2008 Lexus Gs450h 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 2007-2008 Lexus Gs450h . 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   WHITE (+)   @ DRIVERS FUSE BOX, 1-PIN PLUG
 STARTER  PINK (-)  @ POWER SWITCH, (BLACK, 14-PIN PLUG) PIN 7 or PSCU, (40-PIN PLUG) PIN 14, NOTE #5
 STARTER 2  BLACK (-)  @ POWER SWITCH, (BLACK, 14-PIN PLUG) PIN 2 or PSCU, (40-PIN PLUG) PIN 37, NOTE #5
 IGNITION 1  LT. GREEN (+) (NOT for REMOTE START)  @ PSCU, (40-PIN PLUG) PIN 35, NOTE #5
 IGNITION 2  PINK (+) (NOT for REMOTE START)  @ PSCU, (40-PIN PLUG) PIN 34, NOTE #5
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  GREEN (+) (NOT for REMOTE START)  @ PSCU, (40-PIN PLUG) PIN 11, NOTE #5
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  BLUE (-)  @ HEADLIGHT SWITCH
 PARKING LIGHTS ( + )  GREEN (+)  @ HEADLIGHT ASSEMBLY, under Hood
 POWER LOCK  BLUE (TYPE B), NOTE #2  @ PASSENGER DOOR ECU, (24-PIN PLUG) PIN 22, in Passenger Door
 POWER UNLOCK  GREEN (TYPE B), NOTE #3  @ PASSENGER DOOR ECU, (24-PIN PLUG) PIN 23, in Door
 DOOR TRIGGER  RED (+)  @ BECU (RH), (16-PIN PLUG), PIN 14, NOTE #7
 DOMELIGHT SUPERVISION  BLUE (-)  @ BECU (LH), (10-PIN PLUG), PIN 2, NOTE #8
 TRUNK RELEASE  LT. GREEN (-) NOTE #6  @ BECU (LH), (16-PIN PLUG), PIN 13, NOTE #8
 SLIDING POWER DOOR  N/A  
 HORN  YELLOW (-)  @ HORN SWITCH, under Steering Column Cover
 TACH  WHITE (AC)  @ DATA LINK Connector, PIN 9, under Drivers Dash
 WAIT TO START LIGHT  N/A  
 BRAKE  RED/BLACK (+)  @ BRAKE SWITCH above Brake Pedal
 FACTORY ALARM DISARM   PINK (-) Requires Double Pulse, NOTE #4  @ POWER WINDOW MASTER SWITCH, (20-PIN PLUG) PIN 13
 ANTI-THEFT  TOYOTA'S TRANSPONDER SYSTEM, See NOTE #1  
 EXTRA INFORMATION
 NOTE #1: LEXUS TRANSPONDER ANTI-THEFT SYSTEM, Requires Bypass Module, Part # 791 Bypass Module (for REMOTE STARTING ONLY!) an Extra Ignition key is required to be placed inside this module for Operation. Part # PK-ALL Bypass Module (for REMOTE STARTING ONLY!) KEYLESS BYPASS NO KEY is required for Operation. To order the Bypass Module go to the INTERFACE BYPASS MODULE Page on this website NOTE #2: this wire is only needed if the Door Locks do not function with the Aftermarket System while the vehicle is running. All other times just use the Factory Alarm Arm wire. NOTE #3: this wire is only needed if the Door Locks do not function with the Aftermarket System while the vehicle is running. All other times just use the Factory Alarm Disarm wire. NOTE #4: TEST this wire while turning the Key in the Drivers Door, this wire will also Unlock the Doors. NOTE #5: the PSCU, (Power Source Control Unit) is the Module, to the far RIGHT, behind the GLOVE BOX. NOTE #6: TEST this wire while opening the Trunk with the Handle on the Rear of the vehicle. NOTE #7: the BECU (RH) (Body Electronic Control Unit) (Right Hand) is part of the PASSENGER SIDE FUSE BOX, behind the GLOVE BOX NOTE #8: the BECU (LH) (Body Electronic Control Unit) (Left Hand) is on the Right side of the DRIVERS SIDE FUSE BOX, under the DRIVERS DASH
 
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