Mercedes old 16 pin diagnostic connector pinout diagram @ pinoutguide.com
Stop Light Switch Switch For Mercedes Benz W201 W124 W210 & For Benz MB 38 Pin To 16 Pin OBD2 OBD II Diagnostic Adapter|Car Light Accessories| - AliExpress
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w124 Diagnostics questions "Check Engine Light" - PeachParts Mercedes-Benz Forum