BMW K1600GT/GTL - P3 Installation

    The P3 Lights system is a much-needed safety enhancement on the K1600GT/GTL, providing significantly more light than the stock tail and brake lights.


    The LED modules can be mounted in the normal position on either side of the license plate bracket as shown in the photo on the right.

     

    They can also be installed in the topcase in place of the optional BMW brake light, described later on this page.


    If you already have the BMW topcase light, the P3 Lights controller can be connected to this as well as to the LED modules included in the kit, converting the topcase light from a simple brake light to a combined tail light/flashing brake light with emergency flasher.  

     

    Topcase details are below.

    The P3 Lights system on the K1600GT or GTL normally connect to the wires going to the topcase connector. These wires are easily accessed where they enter the left side of the black, cylindrical connector under the passenger seat (circled in photo below). Connect the controller's black wire to the brown wire in this connector, and connect the controller's white wire to the wire that is grey with black tracer and repeating yellow dots.

     

    Important:  Do not use the K1600's tail light wire for the controller's red wire.  The CANBUS has a very low tolerance for additional current on the tail light wire and using it will likely cause a lamp failure warning

    The controller's red wire needs to be connected to a switched 12 volt source and on this bike the red wire in the topcase connector is the easiest to access. (Note: power remains on for ~ 30 seconds after the ignition is switched off on this wire. P3 Lights draw very little current so this is not a problem.)

     

    To have the lights turn off with the ignition, you can connect the controller's red wire to the bike's yellow low beam wire or any switched output on a supplementary fuse block.

    If you are installing a P3-TS system to supplement the K1600's rather dim turn signals, you will need to access tail light wiring harness to tap into the left and right turn signal wires.

     

    The tail light wiring harness can be accessed by removing the side case on the right side of the bike, then removing a small bike-colored access panel just below the passenger grab handle on the right side.

     

    The wiring harness in this right-side access port is held in a metal clip behind the access panel. The wires are contained in a loose piece of rubber tubing, which must be removed to gain access to the wiring, as shown in the photo on the right.

    The wires available here can be used for connections to the controller's black and white wires as well as the controller's yellow and green turn signal wires.  However, the controller's red wire still needs to be connected elsewhere as described above.  A table of wire colors prior to the 2017 model year is below.  

    Note: Click here for 2017 and newer wire colors.

    Important Note About Adding Multiple LED modules on the K1600GT/GTL

    This motorcycle is fairly sensitive on how much current is drawn from its electrical circuits. The red/brown wire in the cylindrical topcase connector can power a P3 system controller with its 2 LED modules and/or connect the stock topcase light without any problems.

     

    While our controller will support additional LED modules (in the side cases, top case, or around the license plate) the increased current draw will likely result in a lamp failure warning. The bike will also shut off power to the affected circuit until the ignition is switched off and then back on again.


    For installations with additional modules it will be necessary to connect the controller's red wire to a different switched 12 volt source.  Alternate power sources would be the yellow wire going to the low beam or the red wire in the auxiliary power jack under the seat or any switched output on a supplementary fuse block.

     
     
    Convert Topcase Brake Light Into a Combined Tail Light / Flashing Brake Light
    -Applicable to both K1600GT/GTL and R1200RT

    If your K1600GT/GTL or R1200RT has the built in topcase brake light, it is possible to re-wire this light so that it can be driven from the IQ-260 controller from the P3 rear system and function the same way as the P3 Lights LED modules. In this configuration the stock topcase light will come on as a tail light with the P3's unique visibility flicker and when the brakes are applied it will flash brightly. It will also flash when the P3 system's emergency flasher mode is activated.  If you do not have the BMW light option you can install our LED modules there instead.


    Note: the P3 Lights controller powering the stock topcase light must be the non-turn signal version. If you already have the P3-TS model on your bike, you can add an IQ-260 control module to perform this function.

    Topcase Wiring Instructions

    If you have already installed your P3 system (the IQ-260 controller and LED modules) then skip to the section below where the photo lists 3 steps. Note: Click here for 2017 and newer wire colors.

    New topcase installation with or without our LED modules

    Locate the cylindrical topcase connector, at the rear under the seat (photo above)

     

    The connections should be made on the left (bike) side of the connector, so that you can remove the topcase without disturbing the wiring.  


    Follow the 5 steps in the photo on the right.  

    In step 2 connect the Posi-Tap® onto the bike side of the cut wire and then insulate the cut end.

    In step 3 you will also connect the silver wires from the LED modules to the gray/green wire if you are installing a P3 system as well.  

    In step 5 you will also connect the copper wires from the LED modules to the Posi-Tap® on the brown wire if you are installing a P3 system as well.

    (Note: power remains on for ~ 30 seconds after the ignition is switched off on this wire. P3 Lights draw very little current so this is not a problem.)  To have the lights turn off with the ignition, you can connect the controller's red wire to the bike's yellow low beam wire or any switched output on a supplementary fuse block.

    Add topcase to existing P3 system

    When you already have a non-turn signal version of our P3 rear system installed it is easy to connect the stock topcase light into the system.

     

    Follow the 3 steps in the photo on the right.

    In step 2 insulate the cut end of the wire that is on the bike side.

    In step 3 strip 3/8" of the insulation from the end of the cut wire that runs to the topcase.  Connect it to the controller's gray/green wire, along with the silver wires from the LED modules.  

    Install P3 LED modules in TopCase
    If your K1600GT/GTL topcase does not have the brake light option, you're in luck. You can install our P3 system and it's LED modules directly into your topcase, in the same space where the BMW light would normally go. Then instead of having just a medium brightness brake light, you get two very bright tail lights with our patented conspicuity flicker and extremely bright, flashing brake lights. In this installation you can use either a regular (P3) or a turn signal version (P3-TS) of the system since there will be two lights in the topcase. Not only is this setup much more visible than the BMW light, it is also much less expensive.

    Installation

    The P3 LED modules mount directly on the filler panel that comes with the topcase as shown in the photo on the right..

    A description and photos of how one customer installed this system may be found on the K1600 forum here


    Wiring diagrams for this configuration with and without the turn signal feature are included below.
     

    2017 and newer K1600-GTL wire colors and information

    For the 2017 and newer K1600-GTL models the wire colors have changed.  The connection methods remain the same as described above for earlier model years.

    To install a non-turn signal model of the P3 system you can make all necessary connections to the bike's wiring on the bike side of the top case connector.  Details are in the photo titled "2018 K1600 Top Case Connector".

    Controller wire color                    Bike wire color

    black (ground)                                brown

    red (switched 12v)                          red/green stripe

    white (brake)                                   brown/violet stripe

     

    To install a turn signal (TS) version of the controller 

    you will need to access tail light wiring harness to tap into the left (brown/blue stripe) and right (brown/yellow stripe) turn signal wires.

     

    The tail light wiring harness can be accessed by removing the side case on the right side of the bike, then removing a small bike-colored access panel just below the passenger grab handle on the right side.

     

    The wiring harness in this right-side access port is held in a metal clip behind the access panel. The wires are contained in a loose piece of rubber tubing, which must be removed to gain access to the wiring, as shown in the photo on the left.

    The wires available here can be used for connections to the controller's black and white wires as well as the controller's yellow and green turn signal wires.  However, the controller's red wire still needs to be connected elsewhere as described above. 

    If you would like to have the IQ-260 control the stock top case brake light, you must use a non-TS version of the controller.  This will turn the top case light into a tail light and brake light.

    The wire colors for the 2017 and newer models is shown in the photo titled "2018 K1600 - Connecting to Top Case Light" photo.  

     

    A detailed description of the steps can be found in the section above on converting top case light.