Question about Cars & Trucks
Posted by Anonymous on
Sorry can't help with a wiring diagram for the alternator but mostly the wiring is fairly intuitive. Most basic modern (machine sensed) alternators have only two wires which aren't interchangeable. 1 thick wire goes direct to a battery live and the other is a thin wire that is from the ignition or battery light.
Some alternators are mounted in rubber bushes and need an additional ground to the casing.
Battery sensed alternators have an additional (thin) live wire that eventually goes to a battery live after meandering around behind the dash for a few yards.
A few manufacturers have fitted a smart charging alternator that is controlled by a small ecu from information supplied by the engine management ecu but generally where ther are more than two wires multiway plugs are used.
Posted on Oct 06, 2015
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Posted on Jan 02, 2017
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.>>>firstname.lastname@example.org
Posted on Aug 16, 2009
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.
Posted on Sep 15, 2009
My sincere apologies for the delayed response.
I am personally going back to answer your unanswered questions.
I have only been a free contributor to this site for the past 4-months.
I do not know if you still need this information, but I am going ahead and answering it anyway. You may want to Print the Diagrams for future use.
CLICK on the following LINKS. It has the Belt Diagrams you will need.
I do not know if you have the 528 or 540 Model; however I have included both Links below.
If you would: Before Clicking: Let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!
Again my apologies...
For the 528:
For the 540:
Posted on Mar 08, 2010
Hi, this is a 2 wire Delco alternator. The wire from the terminal on the back goes to the battery or starter, and the other (excite) wire goes to the battery light in the dash. It also goes to the PCM--not sure which pin, sorry.
Posted on Mar 27, 2011
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