View Single Post
Old 07-21-2013, 06:08 PM
SD Blue SD Blue is offline
Registered User
Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 4,186
A failed bulb can give you a no-charge situation. The alternator field excitation comes from Battery-Ignition Switch-Charge Indicator Light-Alternator (blue wire). With the alternator disconnected, you should read +12Vdc on the blue wire, and ignition switched to RUN.

If you are not getting other warning lights as well, you may have an ignition switch issue.

84 300SD 350K+ miles ( Blue Belle )
Reply With Quote