Question about 1999 Oldsmobile Intrigue

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I had to replace the pigtail and alternator , the new pigtail has 4 wires, the existing wires in the car are 3, where does the fourth wire connect to ?

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The alternator is used on many different models. The other terminal is probably a signal to the computer that your car doesn't use. As long as the connector fits, you are golden. Just tape up the end of the extra wire to avoid a short. OK?

Posted on Nov 08, 2010


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Do you have to remove the alternator to replace the pigtail that goes to it?

This will depend on the car and the alternator.
You have not mentioned what year, make, and model you are working on.
If you can see the whole pigtail, you should not need to remove the alternator to replace it.
The pigtail should have a removable plug that plugs into the alternator.
If so, unplug it and repair it.
Remember, most of these have a wire directly to the battery, so be very certain to take the wires off the battery terminal before you start to work on the alternator.
God bless your efforts.

Feb 29, 2016 | Cars & Trucks

1 Answer

How to install a harness for trailer lights on a 1993 honda accord station wagon

The SIMPLE way to do it is...

You can buy replacement taillight bulbs with wiring pigtail wiring hanging out of the side of the bulb. You'd use them to replace your existing taillight bulbs and connect your trailer harness to the pigtail wires. You may need to drill through the taillight housing to get the harness wiring in to the bulbs - if you have to do that, seal it back up around the wiring with RTV silicone.

That's a lot easier than tracking down each wire, probing it to find out what it does, and splicing into it with pinch splices (which aren't very reliable), then periodically replacing the pinch splices that've gone bad and made your trailer lights fail. You can make a pretty good splice to the pigtailed taillight bulbs, and it's really easy to tell what each pigtail does - brake/turn or park light.

Jul 31, 2014 | 1993 Honda Accord

1 Answer

I have a 2000 z28 camaro ls1 5.7 burning out alternators in about 2 or 3 miles could it be a bad pcm

are you getting the right tension on the drive belt ?, are you replaceing the alternator complete with a new regulator ? sorry if these are basic questions but never heard of this in over 30 years as a mechanic, have the OBD codes read as there must be a cause !

Jun 26, 2014 | Chevrolet Camaro Cars & Trucks

1 Answer

Alternator not charging

I believe the regulator for that vehicle is in the PCM ,if it failed you are looking at a $$$$ part. You can use an earlier regulator and leave the control module alone.Like a 1985 diplomat ,have to get the pigtail for the regulator also,then run the 2 white wires to that instead of the PCM

Apr 05, 2014 | 2006 Chrysler PT Cruiser

1 Answer

Alternator wiring harness

An alternator can run on two wires, the thick wire is the supply to charge the battery, direct to positive, via fuse box or starter supply. The thin wire possibly blue on Fords, is the energiser wire from the dash charge light, without this connected the alternator will not charge. If on the new pigtail two wires are thick (30amp) you can ignore one, some vehicles double up on the charge supply wire.

Dec 20, 2013 | 2004 Ford Escape

1 Answer

I have a 98 pontiac sunfire 2.4 . I just replaced the alternator and found out that it was missing the electrial plug. I located two cut wires but still no plug. I brought a 4 wire plug with pigtails from...

Hopefully this helps. In the wiring diagram the B+ wire is the large red battery cable that bolts to the back of the alt and is not part of the plug.



I’m happy to assist further over the phone at

Apr 20, 2011 | 1999 Pontiac Sunfire

1 Answer

Blower not turning to push air and heat through vents, Replaced blower motor, still not working. How do you get to the dash wiring to check electrical connections. fuse is good.

Replace the Blower Resistor. (About $12).

The resistor might be good; I have found that the terminals corrode, create resistance and sometimes melt the connector (About $100). Check the resistor before replacing it! If the connector gets fried, solder pigtails onto the good resistor and use Marr connectors to attach the pigtails to the existing wires,

Jul 12, 2010 | 2001 Dodge Dakota

1 Answer

Need wiring diagram for 1967 camaro v8 changed from external regulator to alternator with internal regulator

I am assuming you are now using a 1976 style GM alt.
The most common and popular model.
You need one 10 gauge wire from the battery to the alternator output.
This can be run directly from the battery +.
Run a short 10 gauge wire from alt output to large wire at regulator plug on alt.
Run small wire on alt reg plug to Bat light wire.
A new alt regulator plug pigtail can be bought at any parts store and is recommended.

The existing regulator should have the connections marked.
One of those wires will be the bat light wire if needed.
If you have a amp meter or voltmeter in the vehicle.....use your existing large output wire (usually red) to hook up to the new alt output connection.

Sep 15, 2009 | Chevrolet Camaro Cars & Trucks

2 Answers

88 chevy pickup not sure where wires go from Alternator

make sure the pigtail is plugged into the alternator and that the power wire is hooked to the pin on the back of the alternator, if there is no plug there you can get a replacement one from the parts house with a pigtail fairly cheap and just solder it in place

Aug 28, 2009 | Chevrolet Chevy Cars & Trucks

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