Mercedes Benz E320 CDI W210 Year 2000

Good afternoon forum,
I have been given the Mercedes of the matter, and I want to start a restoration project. I pray to see if you can facilitate workshop manual and electrical schemes. The person who gives it to me, tells me that you have to change the engine cables. I would also appreciate if you give me north where to find her.
Thank everyone in advance.
Greetings.