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Wrong terminal

I was installing a new battery into a 1992 Mazda Protege. Being in a hurry I got the terminals switch. Now I know this was a stupid mistake, but is there any way that I can reverse the damage? Whenever I try to start the car, turn on any electrical device, there’s nothing. Any suggestions as to what to do? Being a '92 model I don’t want to put too much money into it. I was getting it ready to sell anyway.



I

Check the main power fuses and circuit breakers in the box under the hood. At least one is probably blown.

Check for fusible links as well.

Hopefully a fuse or fusible link went and gave up it’s life protecting the more expensive things in your car.

I’ll be that will be the last time that happens to you.