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GS300 Alternator Is...
 
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GS300 Alternator Issue

  

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Hi, Scotty 
Owned a 02 Lexus GS300 for a few years, recently the battery light keeps coming on, I changed a few alternators from junkyard, and then replaced one from my friends car (which doesn't have the issue), even then the light on my car wouldn't turn off. I checked the continuity on the harness, everything seems to be normal. 
Please help, I don't want to invest in a new alternator 


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Well personally I would never use a junkyard alternator. You have no idea whether they work or not. All you have to do is take the alternator off and take it to a store that tests them and you will see if the alternator is good or bad. If it is not bad then either the wiring is bad or you have a computer module failure


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