Hooking up jumper cables backwards

Tiny
JOEJOE1980
  • MEMBER
  • 2005 MITSUBISHI GALANT
  • 100,000 MILES
I hooked up the jumper cables backwards and now the car has very little power flickering lights on the dashboard and will not start.
Sunday, September 13th, 2020 AT 10:58 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

This is not good.

With luck, you may have just blow fuses for this. In a lot of cases, control modules are damaged from the voltage surge of hooking up the cables backwards.

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

You need to replace the battery with a new one to start.

https://www.2carpros.com/articles/how-to-replace-a-car-battery

Then you need to test every fuse in the car and replace any failed fuses with new one.

I attached diagrams of the fuse block for you. There is a fuse box under the hood and inside the car.

Roy

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Sunday, September 13th, 2020 AT 1:55 PM

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