Marulabs BEP 3.0 instrument conversion box for BMW K75 and K100

Makes it easier to replace the spedometer on a BMW K75 and K100

The Marulabs BEP 3.0 was developed for people looking to replace the original cockpit of their K1, K75, K100, or K1100 bike with a speedo of a third-party manufacturer. Also known as a "Lunch Box”  the BEP 3.0 makes installing an aftermarket gaugue stress-free and solder free. No alterations to the wiring harness or modifications of the vehicle are required. Simply plug in and go!

The BEP 3.0 fulfills other essential functions for the K Bike that enables the bike to work the bike in the first place. When simply installing a non-stock replacement speedo (without BEP 3.0) then you lose the following functionality:

• The starter push-button cannot be used anymore (only with applied clutch)
• Signal for the neutral light cannot be picked off at the wiring harness
• The speed signal from the final drive is unavailable
• The emergency fuel tank warning light does not work
• The automatic turn signal resetting does not work
• The battery will no longer be charged

The BEP 3.0 accomplishes all these tasks with compact circuitry.

The Lunch Box also decrypts signals (the speedo signal from the final drive) and sends out signals itself (low fuel warning, starter push-button, generator, automatic turn signal switch shutoff etc…).

Functions

Neutral
RPM
High beam warning light
Taillight
Antilock-bracking-system
Alternator
oil
choke
ignition
left and right indicator
Fuel reserve light  or Fuel gauge

Note: If your fuel tank is not equipped with a float then the level sensor of your speedo will not function either. In this case, only a fuel warning light (being triggered when you have 4L of fuel left) can be used instead.

EMERGENCY MODE

Even if no third-party manufacturer speedometer is connected, the BEP 3.0 accomplishes the full range of essential functions such as closing of the charging circuit generator/battery, turn signal, resetting or ensuring a well-functioning starter push-button

GEAR INDICATOR

The BEP 3.0 is equipped with one outlet for each gear. This allows use of individual gear indicators with the installation of an array of LEDs. For use with ACEWELL instruments that include a gear indicator, it is calculated by rpm and speed, so the BEP 3.0 is a perfect solution! A corresponding manual for programming the gear indicator is included.

Please locate installation well protected from the weather. Electronics are sensitive to water. Your K series Bike always has space for electronic parts below the fuel tank. The wiring harness can be connected with ease. The speedo wires simply have to be connected to the respective outlets. The WAGO connectors used are highly vibration-resistant. No soldering bits nor barrel connectors are required.

Which plug type?

The only thing you have to check is whicht kind of wiring harness plug your K-series bike is equipped with. The K series bikes have one of two types of plugs, one with round connector pins which has a a one piece black connector, or a connector with angular pins, which has a two piece white plug. The Marulabs BEP 3.0 can connecto to either plug type. 

Dimensions

103mm x 62mm x 20mm 

Compatible models

Model	Year
K1	01/1989 - 11/1992
K1	08/1988 - 09/1993
K75	07/1990 - 09/1995
K75	84-96 12/1984 - 11/1996
K75	85-88 07/1985 - 12/1988
K75C	06/1985 - 06/1988
K75C	07/1985 - 03/1990
K75RT	01/1989 - 06/2005
K75RT	09/1989 - 01/1995
K75S	05/1986 - 09/1994
K75S	10/1985 - 05/1995
K100	03/1984 - 10/1986
K100	82-88 05/1982 - 12/1988
K100	87-90 10/1987 - 07/1990
K100LT	07/1986 - 03/1991
K100LT	07/1986 - 10/1991
K100RS	83-89 05/1983 - 10/1989
K100RS	84-89 03/1984 - 07/1989
K100RS	89-92 03/1989 - 06/1992
K100RS	90-92 07/1990 - 01/1992
K100RT	04/1984 - 05/1988
K100RT	10/1983 - 07/1989
K1100LT	02/1992 - 03/1997
K1100LT	06/1989 - 04/1999
K1100RS	04/1992 - 12/1996
K1100RS	11/1992 - 06/1996