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While changing my oil filter I noticed a very thin black wire dangling near the filter. I traced the wire up to a spot just behind the oil dipstick and just below the throttle cable. It was attached to the engine, the part where the air filter connects and flows to the engine. Sorry for the poor descriptions.

This wire is clearly supposed to be attached to something. And by the looks of the forked connection on the loose end, it was previously attached to something. It's not more than 12 inches long. I have no idea what that is in metric land.

I'm not noticing any problems. I just want to know what it is for.

Thoughts? ;)
 

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Alt ground perhaps?
 

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There was an extra, small black ground wire that went from the oil filler tube bracket to the bracket on the inner fender that secures the brake line; it had forked connectors on the ends.
Although I asked several times at SAAB service schools, I never found out what it was for. The car will work fine without it.

Other wires in the area are blue (oil pressure), green/white (alternator exciter), and the short, heavy alternator ground mentioned above.
 
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