Hooking up jumper cables backwards

2005 MITSUBISHI GALANT
100,000 MILES
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JOEJOE1980
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  • 1 POST
I hooked up the jumper cables backwards and now the car has very little power flickering lights on the dashboard and will not start.
Sep 13, 2020 at 10:58 AM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 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

Sep 13, 2020 at 1:55 PM