Help needed. Electrical problem
Thread Starter
Joined: Feb 2018
Posts: 4
From: Texas
Help needed. Electrical problem
Ok so my dumb cousin accidentally put the battery on backwards and now the battery is not charging aka (the alternator is not powering up) I checked the cable that runs to the alternator and the alternator and they're both good. But I found that there is no power going to it from the post on the fuse box. I checked the manual and it says "m case fuses" but I'm not sure what that is and where they are because they're not visible that's for sure. I have a 2015 mustang Gt FYI
3rd Gear Member
Joined: Jul 2017
Posts: 849
From: AZ
He likely fried one or both of the Fusible Links protecting the alternator. Not sure of their location on Mustang. A good shop will know. They are originally color-coded to indicate their size, but when blown, will have a burnt and rippled surface appearance, often brown. They are located outside of the wiring harness, most often at the place the power leads in to the Battery Junction Box.
Thread Starter
Joined: Feb 2018
Posts: 4
From: Texas
Lol I wanted to kill him. But yeah i found that one of the fuses that are in the battery junction box is out and there's no voltage going to the alternator. I ordered the part, I'll get it Wednesday. I hope is just that.
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92hatchLX
5.0L (1979-1995) Mustang
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Nov 15, 2006 11:10 AM