Alternator problem, wiring expert needed

[Dannyboy]

Okay here's the problem

91 Explorer... dashboard battery light came on and battery died out

I had a spare alternator from my 94 so I installed it, battery light still on, no charge to battery.

Took original alternator to Autozone and it failed the test, purchased new alternator thinking my spare could be bad as well.

Went home, installed brand new alternator and same results.

Thus far,

Battery cables appear to be good, all wires plugged tightly into alternator


white single wire on alternator appears to be at about .2 volts

yellow 0 volts
white black- 0 volts
green- same as big wire on alternator, ranging from 11-9 when battery was draining

Any suggestions on tracking this down?

Thanks in advance. Tried the search, didn't see anything relevant.

 

[BrooklynBay]

I read something like this last week. The other person discovered that his 175 amp fuse blew out. Check this thread: http://www.explorerforum.com/forums/showthread.php?t=196906

 

[Dannyboy]

hmmm, well mine is a 91 and my fuse panel under hood is very basic, about 8 spaces but I snooped around for something.

Just went back to Autozone and found my alternator from my 94 and the brand new one I purchased today both work. Still needing help!

 

[BrooklynBay]

Do you have a wiring diagram? Autozone should have one on their website. The high current fuse mentioned in that other thread was outside of the power distribution box. This is why it wasn't listed in the link in that thread.

 

[cjones101812]

here's the diagram

 

[BrooklynBay]

Thanks for posting that PDF with the wiring diagram. According to the diagram, there is a fuse, and a fusible link involved.

 

[Makahveli]

Wuzzup guys , I'm in the process and putting my engine back together. And I look at the that one of my connectors from or to the alternator has broken off. I see its a black wire with one of those loop or O connectors. Its attached to the connectors that fasten into the alternator. I'm gonna cut that end off and make a new one, what I need to know is where does it go?

 

[IZwack]

I think thats the B+ wire.

See: http://www.autozone.com/az/cds/en_u.../0900823d800e31d8/repairInfoPages.htm#hd1-1-2

 

[Makahveli]

O.K. , that wire must be inop now, cause I remember upgrading to a 4 gauge wire there a few years ago and thats probly the mix-up. I need to snip or tape up that wire.