Use the alligator clap adapter on it and try that if it makes a difference? I would agree there's a blown fuse maybe. My CTEK has always worked on the Porsche and Ferrari batteries slow charge.
But I only use the claps directly to the battery posts, never the cig lighter and it never had a problem.
best
Last edited by soucorp; 07-19-2013 at 11:27 AM.
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