Replying to Thread:

Battery light staying on ? (7.3ltr)

Created On Tuesday 30, August, 2005 10:46 PM by Rus

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Rus

Posts: 8
Joined: Jul 2005

Tuesday August 30, 2005 22:46

I have 2001 f350 7.3ltr . My battery light is staying on and of course figured it was my alternator and went out and bought one, I installed
it and light is still is on? I checked all fuses and relays and all are fine. I phoned a mechanic and he said there should be power to the two wires in the clip on the alt, but theres only one wire with power . I don't know were else to look if some body could help me please&thank you Rusty

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truckdoctor

Posts: 33
Joined: Jun 2012

Wednesday August 22, 2012 21:54
Sometimes the plug can be bad you can get a replacement plug to wire in try wiggling it and see if it starts charging.That is the plug that fields the alternator 2 have to be hot.

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dsldr

Posts: 30
Joined: Jan 2010

Saturday January 18, 2014 18:16

The power that feeds those two wires comes from a hot feed in the underhood wiring harness, usually through a fusible link. Good luck finding that fusible link. Run a hot 16 ga from pos batt over to alt and hook it in. Fixed. My 99 v-10 350 did the same thing. Had that wiring harness stripped down 7 ways from sunday,no fusible link there, so I did what I just told you to do. Works fine. Yep, after buying a new alt, and taking it back and having it tested too. Drove me bananas for 2 months. A little wire and a schematic will fix a lot. Could probably wire it to alt output. Up to you. Just check that it ain't draining the battery leaving it hooked up- mine didn't.

-------------------------
gregory l ralyea

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