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Installation Manual  

Rhombus S Extreme

Dear customer,

Thank you for placing your trust in us by purchasing this pro-
duct. Please read these instructions carefully and completely 
before deciding whether you would like to do the installation 
yourself or have it done by a specialist. 

Legal note: Rhombus S Extreme  

All Kellermann Rhombus S Extreme are ECE-approved for mo-
torcycles as documented by the approval mark engraved into the 
housing. This means that you may use the Kellermann products 
instead of the original tail/brake lights without any entry in your 
vehicle documents or presentation to a vehicle inspection organi-
zation. You do not need to carry any documentation with you. 
This applies to all motorcycles licensed under EU law and 
the corresponding lights.

ATTENTION! The warranty will not apply if the Rhombus S Extreme 
has not been correctly installed or connected to the electrical supply 
on your motorcycle. Do not carry out the installation unless you are 
qualified to do so; otherwise, leave the installation and connection 
work for your Spot/Spot Dark to a qualified repair shop. The warranty 
does not apply to damage due to wrong connection or excess 
voltage (such as due to a defective alternator regulator).

ATTENTION! Improper mechanical installation or orientation of 
your Rhombus S Extreme lights may invalidate your motorcycle’s 
roadworthiness and insurance protection, or even lead to accidents. 
Before every usage of your vehicle, check whether the indicators are 
correctly mounted and fully functional.

ATTENTION! Your Rhombus S Extreme lights may heat up during 
use. Contact with bare skin or heat-sensitive objects may lead 
to damage or injury.

CLEANING ADVICE!  Your new Kellermann products are pre-
mium-quality products. In order to enjoy them long time and 
maintain the warranty we recommend not to use any cleansers 
with alkaline/acid and/or grinding substances or steel wool. We 
also advice not to use steam cleaners.

INSTALLATION

ATTENTION!

 

Make sure that your motorcycle is standing firmly 

before you start work, as a fall may lead to damage to the motorcycle 
or injury to you or others.

Dismantle the original indicators. Mount the Rhombus S Extreme 
in place of the original indicators, or drill a 5 mm diameter hole and 
fasten the Rhombus S Extreme at 5 Nm with the nut supplied. 
Use adapters, if necessary, available at 

www.kellermann-online.

com

. Make sure that the area where the wires emerge is protected 

from splash water. Mount the Rhombus S Extreme in such a way 
that the beams run horizontally in your motorcycle’s direction of 
travel. 
Alignment is important to safety in traffic and essential to your 
motorcycle’s roadworthiness, as a motorcycle with incorrectly 
aligned lights is easy to overlook on the road.

Make sure that you keep the following measures in selecting your 
fastening point:

Minimum distance between the illuminating surface of the 
indicators and the headlamp:

20 mm

Cut the wires of the original indicators between the indicator and 
the connector. By doing this the wiring loom stays untouched. 
Connect your Rhombus S Extreme as follows:

INDICATOR FLASH RATE

The flashing frequency can change when converting the original 
indicators. The installation of a load-independent flasher relay (e.g. 
R 2) or a multifunctional assistance system (e.g. CR 4®) will solve 
the problem. If the installation is not possible or not favored, then 
parallel connected power resistors (i.LOAD) will be an option. Only 
a few vehicles need special solutions, which we offer as i.SED, i.BOS 
products.

ATTENTION! The power resistors will become very hot after long-
term usage of the indicator lights. Make sure that no components 
are damaged by this heat.

If you contact us, we will be happy to assist you. To date, we have 
been able to help every customer. 

Our team is constantly working on new, improved solutions 
for all models and vehicles. If you are not sure which electronic 
equipment you require, please contact us. Refer to our homepage 
at 

www.kellermann-online.com

 for additional information, and our 

online shop with a full range of spare parts and accessories and a 
download area. If you have any suggestions or questions, please do 
not hesitate to contact us by email (

[email protected]

or call us: +49 (0)241/93 80 8-0. We are happy to assist you.

ATTENTION! The application of the described measure may 
interrupt correct functionality, in the case of a failure causing 
one of the indicator lights to increase in flash frequency in 
order to alert the driver of such a failure. Before each usage 
of the vehicle, check the functionality of the indicator lights.

The Kellermann Rhombus S Extreme is equipped with the tried-
and-trusted Long Life Protection Guard® circuit, which ensures 
extremely long life with LED technology. It is not necessary to 
replace the illuminate and, due to the laws for device approval, it 
is not allowed.  

ELECTRICAL CONNECTION

In height:

350 mm – 1200 mm above the ground

In length:

The distance between the rear indicators and the rearmost 
limit of vehicle´s over-all length shall not exceed 300 mm.

Geometric visibility:

Horizontal angle: 80° outwards, 20° inwards
Vertical angle: 15° above and below the horizontal. 

Position · In width:

For front indicators: minimum distance of 240 mm.
For rear indicators: minimum distance of 180 mm.

• 

Connect the grey wire on the left-hand (or right-hand) Rhombus 
S Extreme to the plus pole on the left-hand (or right-hand) indi-
cator.
Connect the black wire on the left-hand (or right-hand) Rhom-
bus S Extreme to the minus pole on the left-hand (or right-hand) 
indicator.

To connect the wires of the indicator to the wires of the original 
connector there are crimp connectors and shrink tubings included 
in the delivery. First push one of the shrink-on tubes over one of 
the cables you want to connect and remove five millimeter of 
insulation on the end of each cable. Then push both bare ends into 
a crimp connector and crimp it with an appropriate tool. Then pull 
the shrink-on tube over the connection and heat it up equally until 
it fits tight over the complete length.

This type of connection is technically permanent. To create a 
non-permanent connection, we recommend Posilock wire con-
nectors (not included), which are available for purchase from our 
website at 

www.kellermann-online.com

.

Lay the cables in a way, that they are protected from splash water 
and fasten them, e.g. by using zip ties. Now test the function of 
the Rhombus S Extreme. 

This completes the installation. 

Rhombus S Extreme

Rhombus S Extreme

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