I changed the alternator on my sister's 95 E320 and after installing the new one noticed the green wire conected to D+ on the alternator is dry and live, probably what damaged the old alternator.

I followed the wire and it goes into a metal tube above the tranny, in it go that wire, one from a sensor that is conected in the oil pan and a few more.

All the thin wires are dry and peeled, so trying to replace from there is a risk.

Does anyone know where they go to? how hard is it to change em?

any ideas please?

http://www.peachparts.com/shopforum/tech-help/340228-can-someone-please-help-me-alternator-maybe.html

There is a link that shows the wiring in the thread somewhere.....if all else fails, Google is your next best source.

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1990 190E 3.0L

D+ goes to the charging indicator light in the instrument cluster.