1985 Rolls Royce Silver Spirit


Ron in OKC

December, 11, 2010 AT 12:59 AM

I am replacing alternator on a 1985 Rolls Royce, need wiring diagram or where to put the wires. A one wire GM alternator was tried by a mechanic but does not work. It has a (+) on the back is all.

Just purchased a repaired Rolls Alt. It has a + and - termenal on the back of the case and the side has a A & F term.

The wiring provided from the loom has two #10 or 8 wires that where tied together to the + post of the old GM Alt. There was also a #14 wire that was grounded to a bolt on the motor. The remaining two wires in the loom went to several sensors just below the alt. They look like thats their purpose. Please help if you can.


1 Answer



December, 14, 2010 AT 12:55 AM

We don't have a schematic for that car available. Seeing thewires i'd rather personally check this then giving advice. I would imagine that the two large wires are hot and the smaller wire would be the exciter, but without checking the alternator I woldn't even say anything do to doing damege to alternator/or car itself.

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