Installation and Operating Instructions
Kellermann CR4
Universal comfort flasher relay
with alarm function, hazard warning system,
adaptive brake light* and start assistant*
*Connect and use this function at your own risk
english
Thank you for the trust you have placed in us by purchasing the Kellermann CR4.
The CR4 is a universal, load-independent flasher relay with additional functions. It is suitable
for all motorcycles with conventional indicator switches and flasher relays (2 or 3 contacts).
The power of each indicator may be up to 23 watts, that of the horn up to 50 watts. The following section describes how to install and connect the CR4. Then the individual functions and
their operation are described.
WARNING INFORMATION
WARNING! The proper installation and electrical connection is a prerequisite for the
warranty. Therefore, only carry out this work yourself if you are trained to do so. If you are
not, contact a professional and let him install the Kellermann CR4. If the installation is not
carried out properly, short circuits (cable fire) or damage to other electronic components
and destruction of the flasher relay may result.
The warranty is void in this case!
WARNING! Make sure the motorcycle is standing securely before starting work. This will
prevent injuries and damage that can be caused by the motorcycle overturning.
WARNING! Deep discharge protection deactivates the alarm function.
WARNING! Damage caused by overload will void the warranty.
MECHANICAL INSTALLATION
Remove the original flasher relay, as it is no longer needed. If possible, install the CR4 at the
former installation location of the original flasher relay or at another suitable location, i.e., as
far away from ignition coils and cables as possible. It can be fastened either by means of a
screw connection (4 mm screw) or by means of the enclosed cable ties (e.g. directly on the
cable harness or on a frame tube) or by means of a pressure-sensitive adhesive pad on a flat
or curved surface (pressure-sensitive adhesive pad not included in delivery). If possible, lay all
cables inside the original protective sleeves or along the original cable harness. Ensure that all
cables are adequately protected (e.g. with spiral protection sleeves).
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ELECTRICAL CONNECTION
WARNING INFORMATION:
The indicators may only be controlled by the CR4, otherwise the CR4 will be destroyed
by a short circuit as soon as the indicators are activated externally to the CR4.
Therefore, please pay attention:
• Disable all devices that control the indicators (e.g. already existing hazard warning and
alarm systems)
Colour series
Black
Red
Blue
Red
Grey-blue
Grey
Grey
Grey-white
Black-white
Grey-yellow
Yellow
Green
Grey
Grey-red
Thick
Thin
Thick
Thick
Thick
Thin
ThinGrey-white
Cross-section in mm
1.00
0.25
0.25
0.38
0.38
0.38
1.00
1.00
0.38
0.25
0.38
0.25
0.14
0.14
2
Battery negative1.00
Battery positive
Control lamp positive
Ignition positive
Indicator switch input
Indicator positive left
Indicator positive right
Horn positive output
Horn negative output
Brake light positive output
Brake light positive input
Starter relay positive output
Hazard warning switch input, positive-switching
External alarm input, negative-switching
Horn input, positive-switching
Description
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The CR4 is supplied with parallel connectors and shrinkable sleeves. To connect cables to each
other, first pull one of the shrink able sleeves over one of the cables to be connected, then slide
all cable ends to be connected into a parallel connector. Crimp the sleeve with suitable pliers.
Then pull the shrinkable sleeve over the connection and shrink it, e.g., with a hot air dryer.
Connect the cables leading out of the CR4 to the following cables from the motorcycle
cable harness:
Power supply
• Black cable to battery negative
• Red cable with large cross-section of battery positive, fuse: for LED indicators: 10 A; for bulb
indicators: 15 A
Insert the enclosed fuse holder into the cable. Use the enclosed 10 A fuse for LED indicators
and the 15 A fuse for bulb indicators.
Control lamp
The CR4 has an output for a control lamp that performs various functions. The enclosed LED
signal lamp can be used as a control lamp. Alternatively, if available, the original hazard
warning control lamp or another, unused, original control lamp can also be used. The
operating voltage of the lamp must be 12 V.
• Blue cable to control lamp positive (included control lamp: positive cable is red)
• Connect control lamp negative to earth (enclosed control lamp: negative cable is blue)
Indicators – Comfort flasher system
• Red cable with small cross-section to ignition positive in the socket of the original relay
(49 or B)
• Grey-blue cable to the contact leading to the indicator switch in the socket of the original
relay (49a or L)
• There are two grey cables with a large cross-section. One is connected to the indicator
positive cable on the left, the other to the indicator positive cable on the right. It does not
matter whether you connect the cables to the front or rear indicators.
Acoustic signal emitter / horn – alarm system
We recommend installing a separate acoustic signal emitter, e.g., art. no. 123.976. However, it is
also possible to use the original horn.
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If you use a separate acoustic signal emitter, the connection is simple: Connect its positive
cable to the grey-white cable (with a large cross-section) of the CR4 and its negative cable to
the black-white cable of the CR4.
If the original horn is to be used as a signal emitter, you must first clearly determine the
positive and negative of the horn. To find out, disconnect the horn from the electrical system
and measure the two horn cables with a test lamp against earth with the horn button pressed
down and the ignition switched on. It lights up when checking the positive cable.
• Insert the enclosed diode into the original positive wire of the horn. The white ring of the
diode must point towards the horn. The diode ensures that no current can flow from the CR4
towards the vehicle electrical system. Never install the diode in the grey-white line leading
from the CR4 to the horn!
• Connect the black-white cable to the negative cable of the horn
• Connect the grey-white cable with large cross-section between the diode and the horn to
the positive cable of the horn (see circuit diagram)
Brake light – adaptive brake light
Cut the positive cable of the brake light. This results in two open cable ends. Connect the
grey-yellow cable to the end of the cable that goes to the brake light. Connect the yellow
cable to the other end of the cable.
If you do not want to use the adaptive brake light function, connect the yellow cable to the
positive cable of the brake light. The grey-yellow cable of the CR4 is not connected in this case.
If you also do not want to use the start assistant, do not connect either cable and leave the
brake light intact.
Follow the instructions under “Operation”.
Starter relay – start assistant
The CR4 is positive-switching. To connect the CR4 to the starter relay, you must first determine
whether your vehicle has a positive-switching or a negative-switching starter relay (instructions in the appendix).
If the starter relay is positive-switching, connect the green cable to the cable leading from
the start button to the starter relay.
If the starter relay is negative-switching, it must be converted to positive-switching. To do
this, connect battery negative to the negative of the starter relay and replace the existing
positive cable of the starter relay with the green cable of the CR4. The start button can either
be omitted or converted to postive-switching as follows:
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Indicator left
Indicator right
Battery positive
Starter
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Original circuit diagram
Indicator control lamp
Indicator switch
+…+
Original
Flasher relay
Ignition
positive (+)
-
+
+
+
+ -
Brake light Starter relay
-
Battery Signal emitter / horn
Battery positive
Indicator left
Indicator right
Starter
Circuit diagram with Kellermann CR4
Grey, thick
Control lamp CR4
Blue
Indicator control lamp
Grey, thick
Green
+
Brake light Starter relay
+
Yellow Grey-yellow
Indicator switch
Diode
(only with the
original horn)
Black-white
-
+…+
Grey-blue
CR4
Grey-white, thick
+
Flasher relay
Black
Red, thin
Ignition
positive (+)
Fuse 10/15 A
+ -
Red, thick
Battery Signal emitter / horn
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The cable leading from the start button to the starter relay must now be connected to positive
of the starter relay instead of negative, where the green cable of the CR4 is also connected.
The cable at the start button input still has negative potential. Instead, it must be connected
to ignition positive.
Follow the instructions under “Operation”.
Hazard warning switch – hazard warning system
If the original hazard warning system already exists, it must be deactivated. The original hazard
warning switch would then have no function. If you want it to work as usual, connect it to
the CR4. To do this, remove/cut the original cable at the output of the hazard warning switch
and connect the CR4’s grey cable with a small cross-section to it there. Works with all positive-switching hazard warning switches.
The hazard warning switch is not shown in the circuit diagram, as not all vehicles are equipped
as standard.
The electrical connection is now complete. The two remaining cables are only connected in
special cases; please read the appendix.
OPERATION
Comfort flasher system
With the installation of the CR4, the vehicle’s indicator system gains an additional comfort
function. If the indicator is switched off again immediately after switching on, it continues
to flash briefly. This allows the driver to concentrate fully on the traffic immediately after the
indicator is activated and is freed from the need to think about resetting the indicator. The
indicator behaves as usual when used normally. There is no need to re-adjust to it.
Hazard warning system
Switching on the left or right indicator three times activates the hazard warning system (“left-
off-left-off-left”, “left-off-right-off-left”, etc.). The hazard warning system can only be activated
when the indicator system is at a standstill, and the ignition is switched on. If the ignition is
switched off with the hazard warning lights activated, it will remain active until it is switched
off manually. You can remove the key and still, the hazard warning light remains active without
any increased risk of the vehicle being stolen. After switching off, it can only be reactivated if
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the ignition has been switched on beforehand. This prevents misuse by unauthorised persons.
Reset reminder
The control light signals at regular intervals by a fast flashing sequence that the indicator is
still switched on. This reminds the driver to reset the indicator.
Alarm
The alarm system is activated by the ignition switch. Double ignition-on ignition-off activates
the alarm, which is indicated by the control lamp lighting up several times. After a short time,
the sensor is armed, which is indicated by the control lamp lighting up again continuously.
The alarm is now armed. The control light flashes briefly at regular intervals, signalling that
the vehicle is secured by the alarm. The sensitivity is selected in such a way that vibration
of the ground, e.g., caused by passing trucks and gusts of wind, will not trigger the alarm. If
the vehicle is also moved, the CR4 sounds an alarm by flashing the indicators alternately and
honking at intervals. The alarm stops after 30 seconds. The system is then immediately armed
again. The appendix describes how you can set the threshold of the alarm system yourself in
10 steps.
Adaptive brake light
When braking heavily, the brake light is switched from continuous light to flashing to warn
subsequent traffic and thus prevent rear-end collisions. The law now prescribes such a
function as a mandatory safety device for new vehicles. However, there is currently no
regulation for motorcycles. Connecting and using the adaptive brake light is at your own risk
according to the current legislation.
Start assistant
A start assistant is integrated into the CR4. This is an alternative to the start button, which
becomes obsolete when the CR4 is installed, but can usually also be used again. The star ting
process is initiated by pressing the foot or handbrake lever three times. The starter is
supplied with power until the engine has started. If the engine does not start, the starter
stops after a set time interval to prevent unnecessary battery discharge (e.g. in the event
that the kill switch is inadvertently set to “off”). If the starting process of your vehicle
generally takes longer than the interval, instead of pressing the brake lever three times, you
can hold it down during the third press. The starter then runs until you remove your foot or
hand from the brake. It is basically the same as pressing the start button. You determine
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the duration of the starter operation yourself. Once the engine has started, the start assistant
is deactivated. For example, you cannot restart the engine with the start assistant until the
ignition has been switched off and on again once. The start assistant is intended, for example,
for show vehicles or gatherings on closed private grounds. Connecting and using this function
is at your own risk.
Battery protection circuit / deep discharge protection
The alarm system is deactivated when deep discharge of the battery is imminent.
Depending on the battery capacity, condition and ambient temperature, this usually only
occurs after several weeks, as the power consumption of the CR4 is very low. Even at rest,
some current still flows (a few milliamperes). It is recommended, as usual, to connect a trickle
charger for winter storage or during long periods of standstill.
APPENDIX
How to find out if the start button is positive-switching or negative-switching:
The first goal is to locate the cable leading from the start button to the starter relay. Get access
to the starter relay. Two thick cables exit there, which must stay untouched. Disconnect all
other cable connections from the starter relay (usually two individual cable lugs or a compact plug). Switch on the ignition and measure, e.g., with a test lamp, for each contact in the
connectors once against the negative pole and once against the positive pole of the battery, whether the voltage changes from zero volts to battery voltage when the start button
is pressed. There is usually only one contact for which this is the case. If the voltage changes
when measuring against battery negative, the start button is positive-switching. If it changes against battery positive during measurement, it is negative-switching. Negative-switching
starter relays usually have only 2 contacts. A new permanent negative cable must be connected to the negative-switching contact and the green cable of the CR4 must be connected to
the other. In future, the CR4 will switch the positive wire of the starter relay.
Function and connection of the grey-red and grey-white cables:
• Grey-red cable: External, negative-switching alarm switches can be connected to this cable,
e.g., to protect suitcases. Additional negative-switching sensors can also be connected there
(e.g. proximity sensors).
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• Grey-white cable with small cross-section: The CR4 is not normally connected to the original
horn button. If you intend to replace your original horn button with another one that is only
suitable for low currents, you can connect it to the grey-white cable with a small cross-section.
Prerequisite: You use the original horn as an acoustic signal emitter. The CR4 then functions as
an electronic horn relay. The input of the push-button must have positive potential.
Setting the threshold of the alarm system
If the alarm system is too sensitive or too insensitive, you can adjust the sensitivity. There are
10 levels available. Proceed as follows:
1. Turn the ignition on and off five times in succession. The control light flashes once or several
times to indicate which level is set. It flashes five times with the factory setting (level
5: Medium sensitivity). The more often it ashes, the more sensitive the setting. Level 1: Low
sensitivity; level 10: Highest sensitivity.
2. The sensitivity can be increased or decreased with the indicator switch. Turn on left and then
off again. The control light now flashes either four or six times.
3. Repeat point (2) on the left to change the sensitivity further in this direction. Turn on right
and off again to change to the opposite direction.
4. After a short pause, the currently set sensitivity is displayed after each press by ashing the
control lamp. It is also possible to change several levels in one go without having to wait for
the display after each step.
5. Storage: If no further input is made for a period of time, the control lamp lights up once for a
long time. The setting is now saved. Switching on the ignition once also exits the setting mode
and saves the setting.
6. If you then enter the setting mode again (5x ignition on/off), the control lamp displays the
set sensitivity by flashing one to ten times.
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Function overview of the Kellermann CR4:
Alarm
Comfort flasher system
Hazard warning system
Adaptive brake light
Start assistant
You will find our online shop with our extensive range of spare parts and accessories and a
download area on our homepage www.kellermann-online.com. If you have any questions or
comments, you can always contact us by email (info@kellermann-online.com) or by phone
(+49 241/93 80 8-0).
Art. no.: 123.980
ONLINE SHOP at www.kellermann-online.com
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