View Single Post
Old 11-10-2019, 09:03 PM   #29 (permalink)
Gasoline Fumes
Too many cars
 
Gasoline Fumes's Avatar
 
Join Date: Oct 2009
Location: New York State
Posts: 1,336

CRXFi - '88 Honda CRX XFi

Insight 256 - '00 Honda Insight
Team Honda
Gen-1 Insights

Insight 5342 - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 65.78 mpg (US)
Thanks: 805
Thanked 613 Times in 361 Posts
As far as I know, only two of the wires on the alternator really matter. The obvious big one and the small one that goes to the ignition switch (might be labeled IG terminal). There should be battery voltage at that small wire with the ignition on.

Checking continuity on the big wire might not be enough. A corroded connection (maybe at the fuse?) might be able to pass enough current for a meter, but not for charging the battery. Try measuring voltage between the alternator main terminal and the positive battery terminal with it running. Voltage should be 0 or very close to it. Same with the negative battery terminal to the alternator housing. After typing that, I see 2000mc already suggested it.
__________________

  Reply With Quote