This module will enable you to use the factory cruise control on all DDE5 ECUs (E46, E39 etc).
 
This unit will take a speed input from the speed signal on your vehicle and output all of the required data to the engine ECU to enable cruise control to work. It also has 4 button inputs which replace the steering wheel buttons from the car. Connection of the module is very simple, installation instructions are provided.
 
Button Connection:
The module can accept inputs from a variety of sources, and can accept signals that are either ground switching, or 12v signals.  There are 4 inputs, but not all of these are required for operation of the module:
 
On/Off switch
Reset Switch
Plus (increase speed & set speed)
Minus (decrease speed)
 
We are now also including an optional universal cruise control stalk, which you can purchase alongside the module. This really makes fitting of the module even easier! The stalk comes fitted with a 6 pin Deustch connector to interface with the module, and is completley plug and play. A right hand and left hand stalk are available.
 
Automatic gearboxes:
For automatic gearboxes, the addition of an external speed input is not required, since we can repurpose the speed from the output shaft of the gearbox (with a few correction factors). It is imperative that you input the correct diff ratio and tire size when purchasing, so that the correct settings can be input into the software for your unit. For details of how to calculate compound diff ratios, please read below!
 
Manual gearboxes:
Only BMW manual gearboxes are supported. Please contact us for details of the speed input signal required. 
 
The unit comes calibrated to the settings that you input when purchasing, there is no extra setup required. Only a few connections are required, however a prerequesite of installation is that the brake switches, and clutch switch (manual), are working correctly. We sell a handy little device to help you connect the brake switches to the ECU here
.
 
Diff ratio calculation:
If you have multiple diff ratios in line, for example a transfer case, and differential in axle, please use the following simple calculation to calculate the overall ratio (this is the one you should supply when ordering):
 
Example ratio 1 = 1.2:1
Example ratio 2= 3.6:1
 
Multiply together the first part of both ratios:
 
1.2 x 3.6 =4.32
 
4.32:1 overall ratio
 
A lot of work has gone into ensuring that the cruise control module functions to the same standard it would in a factory vehicle, including all safety features. Please read the instructions thouroughly and carefully during installation.
 
Installation instructions can be found here
 
DISCLAIMER:
Please remember that this is not a plug and play unit. You will be required to use basic electrical test equipment, such as a multimeter, and make connections to the engine ECU. You will also have to add your own brake and clutch pedal switches, these are not supplied with the kit, however, instructions on how they should be connected, are.
 
Price shown excludes UK VAT @ 20%.