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Alternator wiring problem - Cars & Trucks

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Are you having problems with connecting the wires?

Posted on Oct 17, 2013

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Stator wire from alternator


There are three wires that connect to the alternator: ORN to the field terminal, WHT/BLK to the stator terminal, and BLK/ORN to the battery terminal. The female spade must connect to a male spade on the alternator.

Apr 16, 2014 | 1981 Ford F 100

1 Answer

I have a 2000 ram 2500 with diesel. The alternator does not have any voltage on the blue wire for postitive excitation. The green wire (negative) will read to battery + so it is okay. I have done a...


The green wire should be your gen field wire not a ground wire. The alternator should be grounded through the alternator. The blue wire should be a feedback to the pcm only when the alternator is charging (engine running). Make sure your main 140amp charging fuse is good. It also has a battery temperature sensor that controls the field to the alternator. Wire 15 on ecm pnk/yellow to wire 4 blk/lt blue (c1 connector). This should be a variable resistor. If you have voltage on the Dk green wire when running but no output, suspect a bad alternator or bad connections going into the alternator. Be cure to test for alternator output on the alternator itself.

Oct 14, 2012 | Dodge Cars & Trucks

1 Answer

Replace alternator


Alternator REMOVAL 3.2L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Remove or disconnect the following:
    • Negative battery cable
    • Front splash shield
    • Alternator drive belt
    • Adjuster
    • Top alternator bolt
    • Alternator wiring connectors
    • Alternator
3.5L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Remove or disconnect the following:
    • Negative battery cable
    • Accessory drive belt
    • Alternator wiring connectors
    • Alternator
INSTALLATION 3.2L Engine
  1. Install or connect the following:
    • Alternator
    • Alternator wiring connectors
    • Top alternator bolt
    • Adjuster
    • Alternator drive belt. Tighten the alternator top bolt to 16 ft. lbs. (22 Nm) and the adjuster lock bolt to 17 ft. lbs. (24 Nm).
    • Front splash shield
    • Negative battery cable
3.5L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Install or connect the following:
    • Alternator. Tighten the 10mm bolts to 30 ft. lbs. (41 Nm) and the 8mm bolts to 15 ft. lbs. (21 Nm).
    • Alternator wiring connectors
    • Accessory drive belt
    • Negative battery cable
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Jan 08, 2011 | 2000 Isuzu Trooper

1 Answer

I had a used motor w/ 90,000 miles put in about 8 months ago. Ever since I've been having power & charging problems. Had battery checked. Good. Blew out alternator. Replaced w/ new one.


CHECK POSITIVE BATTERY FEED CABLE TO ALTERNATOR AND CHECK ALTERNATOR FIELD WIRING THEY ARE CLOSE TO THE ENGINE BODY. GO TO AUTO PARTS STORE GET SOME FLEXIBLE CONDUCT PLACE ALTERNATOR WIRES IN IT AND REROUTE WIRES THEY COULD BE RUBBING INTO BODY CAUSING SHORT BLOWING OUT ALTERNATOR.THE CADILLAC 4.6L AND 4.9L ENGINES THE ALTERNATOR IN A TIGHT SPOT CLOSE TO THE ENGINE WHERE THE ALTERNATOR WIRES CAN RUB BODY SHORT OUT.CHECK WIRES AROUND ALTERNATOR CAREFULLY.

Aug 06, 2010 | Cadillac DeVille Cars & Trucks

2 Answers

Alternator Removal


Alternator - REMOVAL & INSTALLATION
  1. Disconnect the negative battery cable.
  2. Raise and safely support the front of the vehicle securely on jackstands.
  3. Remove the passenger side engine and transaxle splash shield.
  4. Remove the alternator wiring harness bracket bolt from the rear of the alternator.
  5. Disconnect the alternator electrical connector from the alternator.
  6. Remove the ground wire nut and wire.
  7. Remove the B terminal wire boot. Remove the B terminal nut and wire.
  8. Loosen the inner and outer alternator to bracket mounting bolts.
  9. Loosen the alternator adjustment lock bolt.
  10. Turn the alternator adjustment bolt counterclockwise to loosen the belt.
  11. Remove the belt from the alternator.
  12. Remove the alternator lock bolt and washer.
  13. Remove the inner alternator to bracket mounting bolt and two washers.
  14. Remove the outer alternator to bracket mounting bolt and two washers.
  15. Remove the alternator.
  16. The installation is the reverse of removal.
  17. Adjust the drive belt. For the procedure, please refer to General Information and Maintenance, Routine Maintenance and Tune-Up, Belts, Adjustment, Alternator.
cf55885.jpg

Fig. Alternator wire identification


Hope help with this (remember rated this post).


May 17, 2010 | 1998 Mercury Villager

1 Answer

How to install 03 ford focus alternator?


Removing the Alternator
Disconnect battery ground cable
Remove the ground wire (black) from the alternator
Disconnect the positive wire (red wire held on by a retaining nut) from the back of the alternator
Now disconnect the wire harness from the alternator
Remove the drive belt
NOTE: Some models use a belt tensioner that applies tension to the drive belt.
The best tool to use for this job is the serpentine belt too.
If you can borrow one from a neighbour you can get one at PartSource. (Part# 648451)
On other models you will have to loosen the adjusting bolt on the alternator bracket.
If you're not sure about how to remove the drive belt, visit your local PartSource for free print outs of vehicle specific instructions.
Take off the mounting bolts from the alternator bracket
Now remove the alternator from the engine compartment There. You've removed the alternator. How easy was that?
Installing Your New Alternator
Put the alternator in the engine compartment
Install the mounting bolts that connect the alternator to the alternator bracket
Connect the alternator wiring harness
Now connect the positive wire to the alternator
NOTE: Your new alternator should come with a retaining nut.
Remember to remove the nut before you install the positive wire.
If it doesn't keep the old nut.
Connect the ground wire to the alternator
Now install the drive belt
This is a great time to replace your old worn out belt. When inspecting your old belt look for signs of cracking, oil soaked, hard glazed, splitting or fraying.
All these signs mean it's time you replaced your drive belt.
If your vehicle no longer has the belt routing diagram under the hood, visit your local PartSource for a free print out of the belt routing diagram.
Reconnect the ground battery cable .

Nov 19, 2009 | 2003 Ford Focus

1 Answer

Need a wiring diagram for a bosch alternator


If you ask for a one wire delco alternator,all you have to do is connect the large wire on back of the alternator to the positive battery post on the battery.The alternator is self energizing,there for no problem with wiring up a harness.If I can help,let me know my name is Ron.>>>roniecon@gmail.com

Aug 16, 2009 | Volkswagen Beetle Cars & Trucks

1 Answer

Alternator


Yes it is the wire that comes from the alternator/battery lite in the dash.

Oct 29, 2008 | 1994 Chevrolet C/K 3500

2 Answers

Bad wiring to alternator


I need more information please, bad wiring... not enough will need to know more, such as, The wires to the alternator are bad, previous owner did a bad wiring job to the alternator, or i messed up the wiring to the alternator and need some advice.

Jul 30, 2008 | Toyota T100 Cars & Trucks

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