This is a BUZ102S automotive transistor for 1998-2005 S and CL Class Mercedes instrument cluster lighting repair.
We do not offer any additional technical support for this DIY part.
Be aware that you may also need to replace the Bosch transformer inside the cluster to restore the backlighting. Be sure to determine the correct automotive transistor used on the circuit board – we carry the BUZ102SL transistor and the BUZ102S transistor.
If you are not confident in your abilities to install this, please let us take care of it for you with our repair service.