RE531808 Controller Control Unit for John Deere ECM Excavator Tractor Harvester. Way of Use: Direct Replacement (need to provide vehicle model and engine model for programming) Reference. If there is any problem during this period, repair or replacement service will be provided. (1)Damage caused by excessive wear and tear, dirt, misuse, improper installation or operation, negligence, accidents. (3)Disassembly or repair. If you need a programme, please provide the nameplate number and the motor body number. According to the image of the machine you provide: nameplate number and motor body number, find the programme that suits your needs, make sure that it can be installed and used directly on the machine, and deliver it to you after matching the programme. If you don’t need a programme, just blank data. Package content: 1 × computer board. If you need us to programme it, please provide the pictures of the body plate and engine plate of the machine. This can save your precious time, thanks.