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Old 01-14-2010, 08:07 AM   #1
SuperSpartan
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Question Wires To Alternator Help

Whats the three wires that join into a plug into the back of the alternator on a 1990 Turbo?
It heads from the back of the alternator to the bottom of the fuse box. The wires are cut due to years of being angeled, i need to replace it. Could be the issue why my batt doesn't charge. Im wondering where or how i can replace this.



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Old 01-14-2010, 05:19 PM   #2
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http://www.cygnusx1.net/Supra/Librar...x?S=Main&P=042
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Old 01-15-2010, 01:09 AM   #3
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Thanks seems like i have to get down in wiring it my way though correct? Since i do not think they sell any cables just for that.
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Old 01-15-2010, 01:12 AM   #4
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I don't understand what you are asking there.

Call a Toyota dealer in your area, they may be able to order a pigtail you can just splice on, otherwise replacement plugs and terminals are available and you can do it yourself.
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Old 01-15-2010, 01:37 AM   #5
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haha its alright ill do just that. Thanks for the wiring reference however very helpful since my bay looks like a pit of snakes tangled with vines.
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Old 03-04-2010, 06:37 PM   #6
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Thought I'd post my charging issues in here so as not to start another thread, I've got to check the wiring out with my multimeter yet but was wondering if anyone could offer help with these symptoms.

Basically the car's not getting any charge, and the battery light doesn't come on with the ignition OR when running, it does however come on during (and only during) cranking. When I pulled the alternator apart the brushes looked worn but they're still touching the sliprings with good pressure & I've cleaned them up too. Everything checks out internally, no broken coils etc.

I'm just wondering with the absence of charge light except for cranking if it's likely to be the wiring or if the reg/rec/diode pack tend to fail. Hopefully I'll know more once I've tested the pin outputs but just searching for an easy option haha...
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Old 03-04-2010, 08:08 PM   #7
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odd, yea im not a wizz at all this but what solved my problem is the good old fashioned process of elimination!
replaced alternator, battery, starter, ect. now it has come down to the wiring.
ill post again once i have it solved out.
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Old 03-04-2010, 08:56 PM   #8
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I have it wired directly from the alternator to the battery.

Really easy to do. I can take pics if you like but I'm heading to work now and won't be home until really late.

Meter shows over 14.0V consistently so now my alternator charges my battery just fine.
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Old 03-05-2010, 03:41 PM   #9
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Alright sounds good, id appreciate it if you did post these pics up, ill keep checking thanks!
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Old 03-05-2010, 03:51 PM   #10
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Quote:
Originally Posted by SuperSpartan View Post
Alright sounds good, id appreciate it if you did post these pics up, ill keep checking thanks!
Hold tight, I'll go take some now.
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