Abstract: How to retrofit on board computer to non equiped models
_Applies to: BMW 3 Series 1999 - 2005 - 6 cylinder models (platform: E46)_
Before Performing any Work
Please read [Cautions and Warnings|https://wiki.bentleypublishers.com/x/hgJq] before proceeding with any work on your vehicle
In this article we will retrofit on board computer funtions to the instrument cluster