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Discussion Starter · #1 · (Edited)
I recently did an engins swap in my 1996 900, There is a terminal on the alternator I cannot find the wire for . It is a blade terminal. There was one small yellow wire with a blade terminal I put on a sensor in the block, maybe a heat sensor, perhaps it should have gone on the alternator. I cannot find any other wires. Any help?
 

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The wires are color-coded. Yellow wire going to the engine block is the oil pressure switch. Black and green wire going to the alternator is for the battery/alternator warning light.
 

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The yellow lead is for the starter solenoid, also yellow is used for the oil pressure switch, but I think the length will prevent an unintentional switch...and a short !:nono;
Good luck and welcome to Saab Central
 

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Discussion Starter · #4 ·
Thanks to both replys,I misquoted the year , it is a 1996 but should be the same, the alternator has 2 wires on it now, red-power, and green -ground, does anything go on the empty blade plug, looks as though it may be a field wire but there is not one to be found.Thanks again.
earthworm said:
The yellow lead is for the starter solenoid, also yellow is used for the oil pressure switch, but I think the length will prevent an unintentional switch...and a short !:nono;
Good luck and welcome to Saab Central
 

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Grizzlie said:
Thanks to both replys,I misquoted the year , it is a 1996 but should be the same, the alternator has 2 wires on it now, red-power, and green -ground, does anything go on the empty blade plug, looks as though it may be a field wire but there is not one to be found.Thanks again.
There is no third wire to the alternator on our cars.
 

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Alternator :

Red, B + goes to the starter, then the battery +
Black/Green , D + goes to the alternator warning light.
The body of the alternator must be grounded to the engine.
Black is the ground lead color though out the car's electrical system.
 

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Discussion Starter · #7 ·
Does you're alternator have a single blade terminal, mine has but I do not have a wire. Thanks
earthworm said:
Alternator :

Red, B + goes to the starter, then the battery +
Black/Green , D + goes to the alternator warning light.
The body of the alternator must be grounded to the engine.
Black is the ground lead color though out the car's electrical system.
 

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Only D+ and B+ terminals are used. You will notice no scratch marks on the unused terminals.Bosch makes alternators thru-out the world for a great many makes, many of these are interchangeable or share many of the parts..For all I know, the Mercedes, VW, and Saab alternators could all be nigh identical...
 
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