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Re: Help Please ! - Spec voltage for EXCITER lead to alternator Posted by Bernie [Email] (#1501) [Profile/Gallery] (more from Bernie) on Thu, 4 Jul 2019 18:15:37 In Reply to: Help Please ! - Spec voltage for EXCITER lead to alternator, Mark in Marine [Profile/Gallery] , Thu, 4 Jul 2019 16:36:28 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Hello,
The exciter wire should have 12v on it all the time. As a test to see if the alternator works run a small wire with a 10 amp or so fuse on it directly from the battery to D+. He should then get 14v or so at the big B+ contact at the alternator. I have seen a few times on early 9-5's were the wire for D+ was corroded in the large connector on the bulkhead. I am not sure without seeing the wiring diagram if the bulb failing in the MIU will cause the alternator to not charge like on old 900's. Does the warning lamp on the MIU light with the key on and the car not running? Good Luck, Bernie
_______________________________________ George Riggin Specialty Automotive Current Saabs 1993 900 Turbo Conv. 1993 900 Turbo Conv. Auto 2003 9-3 Conv 2004 9-5 Arc Sedan 2005 9-3 SS 4 door 2005 9-3 SS Conv 2007 9-5 Aero Sedan 1986 900 Turbo Conv A few parts cars also
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