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Crossed Jumper cables, now nothing works?

Tiny
JONATHAN HERNDON
  • MEMBER
  • 1995 TOYOTA COROLLA
  • 105,000 MILES
Battery couldn't start car, but lights did come on. Tried to jump the car but like an idiot had the cables crossed. Horn went off. Disconnected one end then reconnected only for horn to blow again. Realized had jumpers on wrong terminal. Nothing works in the car. Bought a new battery and car is still dead. Is there a fuse that may have blown or is it something worse.
Thanks for the insight.
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Saturday, June 5th, 2021 AT 3:09 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Hi,

Right off the positive terminal on the battery is what is called a fusible link. Basically, it will look like a regular wire, but it functions as a fuse. I believe it is a 12 gauge link and it should be white. See pic 1 below. If that has failed, it will shut power off to everything.

First, locate the link I mentioned and then check to see if there is power at both ends of it. If I am looking at the schematic correctly, it should be right off the battery. There should be a fusible link box there.

Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Hopefully, that is the issue. Let me know what you find or if you have other questions. Also, please let me know if the vehicle has a 1.6L or a 1.8L engine and if anything electrical works.

Take care,

Joe

See pic below.
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Saturday, June 5th, 2021 AT 9:51 PM
Tiny
JONATHAN HERNDON
  • MEMBER
  • 2 POSTS
Thank you for the quick response. The motor is the 1.6ltr. I will order that link and see what happens.
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Sunday, June 6th, 2021 AT 10:29 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Hi,

Before you order it, take a test light and see if power is to it on both sides. That way you will save money if it isn't bad.

Let me know what you find or if you have other questions.

Take care,

Joe
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Sunday, June 6th, 2021 AT 7:15 PM

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