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Vehicle Wiring Details for your
2006-2008 Lexus Rx400h 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 2006-2008 Lexus Rx400h . 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, (8-PIN PLUG), PIN 7
 STARTER  BLUE (+)  @ IGNITION SWITCH, (8-PIN PLUG), PIN 8
 STARTER 2  N/A  
 IGNITION 1  PURPLE (+)  @ IGNITION SWITCH, (8-PIN PLUG), PIN 6
 IGNITION 2  GREEN (+)  @ IGNITION SWITCH, (8-PIN PLUG), PIN 4
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  BROWN or GRAY (+)  @ IGNITION SWITCH, (8-PIN PLUG), PIN 3
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  ORANGE (-)  @ HEADLIGHT SWITCH or BECU,(26-PIN PLUG), PIN 17, NOTE #3
 PARKING LIGHTS ( + )  LT. GREEN (+)  @ FUSE BOX, (BOTTOM, 12-PIN PLUG) PIN 8
 POWER LOCK  PURPLE (TYPE B), (TEST with PASSENGER Switch) NOTE #4  @ FUSE BOX, (TOP, RIGHT, 12-PIN PLUG) PIN 3
 POWER UNLOCK  BROWN (TYPE B), (TEST with PASSENGER Switch) NOTE #5  @ FUSE BOX, (TOP, RIGHT, 12-PIN PLUG) PIN 4
 DOOR TRIGGER  BLACK to BLUE (-)  in DRIVERS KICK PANEL or BECU, (16-PIN PLUG) PIN 14, NOTE #3
 DOMELIGHT SUPERVISION  LT. BLUE (-)  @ FUSE BOX, (RIGHT SIDE, 12-PIN PLUG) PIN 5
 TRUNK RELEASE  GRAY to WHITE (-) NOTE #7  in DRIVERS KICK PANEL or BECU, (28-PIN PLUG) PIN 3, NOTE #3
 SLIDING POWER DOOR  N/A  
 HORN  WHITE to RED (+)  @ HORN SWITCH or FUSE BOX, (MIDDLE, 16-PIN PLUG) PIN 11
 TACH  N/A  
 WAIT TO START LIGHT  N/A  
 BRAKE  BLUE (+)  @ BRAKE SWITCH or FUSE BOX, (BOTTOM, 12-PIN PLUG) PIN 3
 FACTORY ALARM DISARM   GRAY (-) Requires Double Pulse, NOTE #2  @ POWER WINDOW MASTER SWITCH, (20-PIN PLUG) PIN 14
 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: TEST this wire while turning the Key in the Drivers Door. NOTE #3: the BECU, (Body Electronic Control Unit) is located under the DRIVERS Dash and attached to the BACK of the Drivers Dash FUSE BOX. NOTE #4: 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 #5: 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 #6: the PMCU, (Power Management Control Unit) is located under the Drivers Dash, and to the LEFT of the DASH FUSE BOX. NOTE #7: TEST this wire while opening the Liftgate from the Handle on the Rear of the Vehicle. on vehicles with POWER BACK DOOR, the open/close wire is a PURPLE (-) at the Switch on the Dash or BECU, (WHITE, 28-PIN PLUG) PIN 2
 
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