Quick Alternator Question.

[MRoth]

Hi there,

I’m looking for some advice/comment on reconnecting a new Wilson alternator to replace an old SEV Marchal on a 1979 911 SC. The new unit was specified for the car, but the wire connections are quite different. Previously, the following connections were in place on the SEV Marchal:

large red wire – post marked “B+”
large blue wire – post marked “+61”
single brown wire – post marked “D-“
group of smaller brown wires - post marked “D-“
small blue wire attached to a spade pin on the voltage regulator (marked “DL”).

See attached photos of the unit connect and unconnected.









The Wilson alternator has three posts:
2 on the area marked “D-“: “D-“ next to the internal voltage regulator and, I'm, assuming the "61" post the opposite side - is this correct?.
1 on the area marked 2B, effectively “B+”.

See attached photos.




So the question is: which wires go where on the Wilson unit? Looking at this thread (Alternator Issues), and in particular, Technical Bulletin 1 “New Alternator has Integrated Regulator”, I think I’m supposed to do the following:
1. Connect the Red Wire to the “B+” post
2. Connect the Blue Wire to the “61” post
3. Connect all the brown wires to the “D-“ post
4. Cut off the DF wire at the branch – or can I just tape it up for future use of necessary?
5. But – I’m confused by the following statement:
“Fasten multiple-pin plug of removed regulator on wire harness”
6. Reinstall alternator in fan housing...

Any comments would be most appreciated. Thanks in advance - obviously I'm new to this! This is my first Porsche and the PO did not look after it very well.

Myron