Please send us a message with the following information. 1 Year and model (Ex: 1989 E30 325i). 2 New engine choice (Ex: M60 obd1). 3 ABS, A/C, Oil level sensor. (Instructions will be Included). We make adapters that work with these engines. M62 (Converted to OBD1 using E32/E34 harness). We make these for all different e12, e21, e28, e30, e34, e36 models. E30 82-85, 86-87, 88-89, 90-93. E36 92-95, 96-99. If you have any questions, please feel free to ask.