Alternator ident and corresponding regulator

[wullie]

Hello all,

also my 75 911s has the problem that the alternator light does not turn off going to higher RPMs. Therefore I checked the voltage during idling and measured 17,6 Volts!

According to the 101 Projects and some forum messages I assumed that the regulator is defect. According to the receipts of my previous owner I should have a Motorola alternator. So I ordered a new regulator, which does not seem to match:

On the left you see the new regulator (for rebuild Motorola 70W) and on the right the old SEV Marchal.

[img]
http://forums.pelicanparts.com/uploads4/101+0105_IMG1108776142.jpg[/img]


I was confused that the parts are different and that the connectors do not match so I removed the Alternator. To my surprise I could not find any ID on the alternator.



Now I have three questions:
- What alternator do I have?
- Can I operate the new regulator with the existing alternator?
- If the regulator is ok how I have to wire the new regulator to the old connection?

Thanks a lot in advance for your help!

wullie