help needed! Electrical issue after putting battery in wrong

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02-10-2018, 11:14 AM

Xhead121

Thread Starter

Join Date: Feb 2018

Location: Texas

Posts: 4

help needed! Electrical issue after putting battery in wrong

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

02-18-2018, 08:51 AM

wildbadbill

Join Date: Aug 2016

Location: Texas

Posts: 24

is the engine running?
Dumb *** did the same to my friend few years back-the total was $3000 including blown computer
Hope it's not the case.

02-18-2018, 11:07 AM

Xhead121

Thread Starter

Join Date: Feb 2018

Location: Texas

Posts: 4

Problem fixed

it was a blown main fuse, i had to order it from ford. $20 bucks and $70 installation...

02-18-2018, 11:30 AM

barstowpo

2nd Gear Member

Join Date: Feb 2016

Location: MT

Posts: 276

There may be a fusible link in the main wire. Check for a place where the wire feels more floppy than the rest of the harness. Also look for signs of melting. Hopefully the alternator isn't cooked too.

03-08-2018, 05:23 AM

jz78817

4th Gear Member

Join Date: Jul 2011

Location: Michigan

Posts: 1,329

Quote:

Originally Posted by barstowpo

I don't think anyone does fusible links anymore. not since the '90s when everyone moved to power distribution boxes.

03-08-2018, 11:47 PM

imp

3rd Gear Member

Join Date: Jul 2017

Location: AZ

Posts: 849

Quote:

Originally Posted by jz78817

I don't think anyone does fusible links anymore. not since the '90s when everyone moved to power distribution boxes.

Ford continues to use fusible links to this day. What makes you think power distribution boxes eliminate the need for adequate circuit protection? imp

03-11-2018, 06:52 AM

jz78817

4th Gear Member

Join Date: Jul 2011

Location: Michigan

Posts: 1,329

Quote:

Originally Posted by imp

Ford continues to use fusible links to this day. What makes you think power distribution boxes eliminate the need for adequate circuit protection? imp

where the f*** did I say that? PDBs incorporate FUSES which are CIRCUIT PROTECTION.

a plug-in/screw in fuse is a lot easier to replace than a fusible link.

03-11-2018, 02:12 PM

08'MustangDude

Banned

Join Date: Jan 2018

Location: Pennsylvania

Posts: 2,327

Quote:

Originally Posted by jz78817

where the f*** did I say that? PDBs incorporate FUSES which are CIRCUIT PROTECTION.
a plug-in/screw in fuse is a lot easier to replace than a fusible link.

You said:

Quote:

Originally Posted by jz78817

I don't think anyone does fusible links anymore. not since the '90s when everyone moved to power distribution boxes.

Then he said:

Quote:

Originally Posted by imp

Ford continues to use fusible links to this day. What makes you think power distribution boxes eliminate the need for adequate circuit protection? imp

Simply making your statement about no one using fusible links since the '90s untrue, nothing more, nothing less.

03-11-2018, 11:07 PM

imp

3rd Gear Member

Join Date: Jul 2017

Location: AZ

Posts: 849

Quote:

Originally Posted by 08'MustangDude

You said:

Then he said:

Simply making your statement about no one using fusible links since the '90s untrue, nothing more, nothing less.

Interesting dialog here! Especially since it involves me! I'll add clarification: Everyone started using Power Distribution Boxes:: Just another fuse block, with anticipated high-current protection need, much of which feeds "sub-fuses" which are relegated to specific use. No more "one fuse feeds" parking lights, turn signals, radio, horn, etc. My 1955 Merc had 7 fuses and a circuit breaker. My 2004 Explorer has around a hundred!

Fuse Links: Only expected to "blow" under very unusual overload circumstances, like connecting things BACKWARDS. Around 1990, Ford Mustangs used something like 6 or 7 fusibles, maybe 8. My Explorer has 3; all are there to protect the alternator. Fusibles provide a cheaper-than-replaceable-fuse means of Engineers covering their a$$es to avoid lawsuits. Trouble arises when some guy totally wraps tons of pretty tape and **** around those fusibles, thus ensuring possibility of fire. They DO get blisteringly hot before "blowing". imp