Whether your an expert BMW X5 car alarm installer, BMW X5 performance fan or a novice BMW X5 enthusiast with a 2003 BMW X5, a BMW X5 car alarm wiring diagram can save yourself a lot of time. One of the most time consuming tasks with installing an after market car alarm, car security, car remote start, automatic remote starter, shock sensor, tilt sensor, car alarm sensor or any auto alarm is identifying the correct color car security wires for a 2003 BMW X5 headlight bulb size you need for your low beam or high beam and save time. Also, find your other car light bulb sizes including your fog light, reverse light, turn signal, brake light and more. It’s that easy!
The Modified Life staff has taken all its BMW X5 car alarm wiring diagrams, BMW X5 car security wiring diagrams, BMW X5 car alarm wire diagrams, BMW X5 car security wiring schematics, BMW X5 car security diagrams, BMW X5 remote starter wiring diagrams and cataloged them online for our visitors to use for free. Our automotive wiring diagrams allow you to enjoy your new auto security electronics rather than spend countless hours trying to figure out which wires goes where.
Feel free to use any BMW X5 auto alarm wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most of the auto security wiring diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2003 BMW X5.
If you have any questions pertaining to the car wiring in a 2003 BMW X5, please feel free to post it at the bottom of this page and either we’ll do our best to find you the information you need or hopefully someone in the Modified Life community will have the information you are looking for.
Request a Car Alarm Wiring Diagram
If you can’t find your car alarm wiring, car security wire diagram or auto alarm wire diagram on Modified Life, please feel free to post a car alarm wiring diagram request on this page and we’ll do our best to find you the diagram, schematic or information you need for your mobile security installation.
Adding More Information
If you would like to help the Modified Life community by adding a car security wire schematic, car alarm wire diagram, car remote starter wire diagram, auto remote starter wire diagram or auto security wire diagram to our resource, please feel free to post any additional car wiring information about the 2003 BMW X5 on this page.
2003 BMW X5 Car Alarm Wiring Schematic
Battery Constant 12v+ Positive Wire (+): Red
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness
Starter Positive Wire (+): Black/Yellow
Starter Positive Wire Location: Ignition Switch Harness
Ignition Positive Wire (+): Light Green
Ignition Positive Wire Location: Ignition Switch Harness
Second Ignition Positive Wire (+): Light Green
Second Ignition Positive Wire Location: Ignition Switch Harness
Third Ignition Positive Wire (+): Purple/Black
Third Ignition Positive Wire Location: Ignition Switch Harness
Accessory Positive Wire (+): Not Required
Accessory Positive Wire Location: N/A
Power Door Lock Negative Wire (-): Blue/Red
Power Door Lock Negative Wire Location: At Door Module In Driver Door
Power Door Unlock Negative Wire (-): White/Black
Power Door Unlock Negative Wire Location: At Door Module In Driver Door
Door Trigger Negative Wire (-): (2) Brown/White (Use Both). This vehicle has (2) brown/white (-) at each door module, when connecting to an alarm system use both and diode isolate.
Door Trigger Negative Wire Location: At Left Front And Right Front Door Modules In Doors
Domelight Supervision Wire: Turns On With Unlock
Domelight Supervision Wire Location: N/A
Trunk Release Negative Wire (-): Gray/Brown
Trunk Release Negative Wire Location: At Hatch Release Switch
Horn Negative Negative Wire (-): Brown/Red
Horn Negative Negative Wire Location: At Steering Column Harness
Tachometer Wire Negative Wire (-): On the 3.0L, engine use the black at the diagnostic plug on the drivers strut tower. On the 4.4L, use any wire at the fuel injectors that is not brown/red.
Tachometer Wire Negative Wire Location: N/A
Brake Light Positive Wire (+): Blue/Red
Brake Light Positive Wire Location: At Switch Above Brake Pedal
Factory Alarm Disarm Wire (-): Disarms With Unlock
Factory Alarm Disarm Wire Location: N/A
Factory Anti-Theft System: Transponder anti-theft system, requires bypass module and extra ignition key.