100amp fusible link on sr20

[washerman]

Hi,
My buddy connected my battery wrong on my 240sx and now the electronics on the inside of the car dont work ( wipers, speedo, pop up headlights...)

1989 240sx with sr20det , the car runs still but no electrical components work.
I also have a relocated battery to the trunk if that helps.


1-I was doing some research and it said my 100amp fusible link could have blown but i can't seem to locate it,
Or would that even be my problem? not sure where to start to fix all this.

2-Or could it be my ECU was fried i also read that somewhere

Thanks

edit

- i found the 75amp alternator fuse blown, not sure if replacing this will fix the problem

[S-ICHISAN]

if any fuses r bad replce them

[washerman]

None of the fuses are bad, besides the alternator one. Going to replace that but everything else is still not working