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Old Feb 23, 2007 | 08:56 AM
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marioc956
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charging problem

My truck is a 1988 ford truck f150 v8 302 was having problems with the battery keeping charge so I bought a new one and replaced the alternator as well now truck turns on but within 3 seconds the battery light comes on in the dash what causes this. I also put in 4gauge wire all around
 
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Old Feb 23, 2007 | 10:12 AM
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From: Easton,Ks
Originally Posted by marioc956
My truck is a 1988 ford truck f150 v8 302 was having problems with the battery keeping charge so I bought a new one and replaced the alternator as well now truck turns on but within 3 seconds the battery light comes on in the dash what causes this. I also put in 4gauge wire all around
Maybe your LG/R wire is shorted to ground, this could have been your problem all long.
If not check the Yellow wire with a white stripe, it should have battery voltage on it at the alternator.
Did you put the White wire with a black stripe back on?
Here are two diagrams:
http://i54.photobucket.com/albums/g91/subford/Electrical/Charging/PG015.jpg
http://i54.photobucket.com/albums/g91/subford/Electrical/Ignition/PG025.jpg
 

Last edited by subford; Feb 23, 2007 at 10:17 AM.
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