I will write in english i hope moderator will tolerate that
it is almost imposible to use wiring from old clima for new one. you have to change klimabox too.
if i were you i will install instalation from audi 100 c4 or audi a6. klimabox is the same too.
you need about 10 input singlas for klima and some output for wather cooler fan, so you must conect audi v8 instalation and "new" instalation for klima .
it can be done, but you need some time and "stromlaufplane" for audi v8 and audi 100
i did it for my audi v8 and works fine. if you will need any help just let me know !
