This is a brand new B-Transformer with 4 pins that can be used to replace Bosch part number 9 948 411 098, 9 948 411 025, or 9-948 411 09 027.
This transformer is used in 2000-2005 Mercedes S Class instrument clusters with 24C04 EEPROM chip.
Additionally, we carry the A-Transformers and the original 7-pin Mercedes Bosch VOGT Transformers. And please be aware that you may also need to replace the BUZ102S or BUZ102SL transistors inside the cluster to restore the lighting.
We do not offer any additional technical support for this DIY part.
If you are not confident in your abilities to install this, please contact us about sending your unit in for repair.