I was installing my civic battery into my s to make sure alternator was fine but didn't pay attention to pos and neg. Heard a wine noise and now car is done. I'm just wondering what to do to fix the issue

 

If you are lucky you may have just blown the 100 amp main fuse in the underhood fuse box (near the battery). Pull out that fuse, it screws in place with two Phillips screws, and check to see if it is blown. If so you can get a replacement at most auto parts shops at low cost.

 

Ok I will check that. But the battery was on backwards for a minute. My civic battery looked the same as the s battery but the damn terminals are reversed

 

Did you simply install it? or did you click the key and try to start?

 

Tried to start.

 

Turned out to just be the 100 fuse

 

Thank your Honda engineers for that one
Running other non-protected electronics from reverse current can be horribly damaging, and even dangerous.

 

Bet you won't do THAT again, eh?

 

Def not happening again.

 

Good to hear