Whether your an expert Audi A4 car alarm installer, Audi A4 performance fan or a novice Audi A4 enthusiast with a 1999 Audi A4, a Audi A4 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 1999 Audi A4 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 Audi A4 car alarm wiring diagrams, Audi A4 car security wiring diagrams, Audi A4 car alarm wire diagrams, Audi A4 car security wiring schematics, Audi A4 car security diagrams, Audi A4 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 Audi A4 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 1999 Audi A4.
If you have any questions pertaining to the car wiring in a 1999 Audi A4, 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.
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1999 Audi A4 Car Alarm Wiring Diagram
Battery Constant 12v+ Positive Wire (+): Red
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness
Ignition Positive Wire (+): Black
Ignition Positive Wire Location: Ignition Switch Harness
Accessory Positive Wire (+): Yellow/Black
Accessory Positive Wire Location: Ignition Switch Harness
Power Door Lock Negative Wire (-): Brown/Gray Or Red/Brown
Power Door Lock Negative Wire Location: In Drivers Kick Panel Or Security Module (The factory security module is located at the bottom of passenger side of the trunk.)
Power Door Unlock Negative Wire (-): Gray/White (Requires Double Pulse)
Power Door Unlock Negative Wire Location: In Drivers Kick Panel Or Security Module (The factory security module is located at the bottom of passenger side of the trunk.)
Door Trigger Positive Wire (-): Brown/Yellow and Brown/White (The brown/yellow (-) in the drivers kick panel is for the drivers door, the brown/white (-) in the passenger kick panel is for all other doors. When connecting to an alarm system use both wires and diode isolate.)
Door Trigger Positive Wire Location: In Both Kick Panels
Domelight Supervision Wire (-): Brown/Yellow
Domelight Supervision Wire Location: In Drivers Kick Panel
Trunk Release Positive Wire (+): Yellow/Red
Trunk Release Positive Wire Location: At Truck Release Switch
Horn Negative Wire (+): Black/Yellow
Horn Negative Wire Location: At Horn Relay
Tachometer Wire Negative Wire (-): Green/Blue
Tachometer Wire Negative Wire Location: The tach wire is at the instrument cluster or can be found at the ECM on the drivers side firewall.
Brake Light Positive Wire (+): Red/Black
Brake Light Positive Wire Location: At Switch Above Brake Pedal
Factory Alarm Disarm Wire (-): Gray/White (When testing this wire, you must test while turning the key in the trunk key cylinder.)
Factory Alarm Disarm Wire Location: At Security Module (The factory security module is located at the bottom of passenger side of the trunk.)
Factory Anti-Theft System: N/A
Factory Anti-Theft System Location: N/A