Need help installing alternator
 

Hello,

After deciding that the squeaking from my 79SC engine was a bad alternator bearing, I decided to replace it with a rebuilt version which is all I can afford right now. Interestingly, I found that the alternator in the car was a rebuilt Marchal, not original equipment. Not sure how many miles it had on it.

Anyway, the "new" Rhone rebuilt alternator has less terminals than the old one:


http://forums.pelicanparts.com/uploa...1113319978.jpg


My wiring before was as follows:
Terminal Wire
B+ .... Red wire with boot
+61 .... Blue wire with boot
D- .... Fat black wire
second D- .... 3 red wires
DF .... Thin black w/ quick connect

I'm not sure how to get these 5 wires on the new Rhone with only 3 terminals that have no markings on them at all.

The Rhone does have "Porsche" written on it with 911 603 120 04 J so I'm hoping it is compatible.

Can anybody help?

Thanks!

My assumption is, your "new" alternator has an internal regulator as opposed to the external regulator used with your old alternator. Sorry, I can't tell you which wires get connected (or where), but you'll be eliminating your external voltage regulator and a couple of wires that attach to it. A search will probably give you the above information. You may also have to wire a resistor in parallel with the alternator light on the dash (one of the reasons I had my original rebuilt rather than "upgrade" to the newer style).

Jerry M
'78 SC

Here you go..from host.

http://forums.pelicanparts.com/uploa...1113321431.jpg http://forums.pelicanparts.com/uploa...1113321466.jpg


I'll buy your old marchal..PM me with a price

Take a look here, it should answer most of your questions:

Tech Article Pg1

Tech Article Pg2

Don beat me to it....

Thanks everyone.

I don't know what I would do without this board.

Martin

Just be careful still....

The tech articles are correct ...as to which wire gets connected to which post....

I seem to recall, however, that some applications position the alternator in the fan shroud so that the 12 o'clock position ( as seen on the backside of the alternator per the Tech Bulletin) might be at 6 o'clock ...as installed. If so, don't fret....follow the wiring pin-outs of the tech article but note that the "clock" may be rotated 180 degrees...adjust your thinking accordingly.

If not...and it goes in as shown...well....good for you !!!

- Wil