I was wondering after I had gotten a new battery installed at an oil Change place, the guy put the new ground wire right to the firewall on the bolt from the fusebox. sometimes my car has weird electrical issues with lights flickering and was wondering if that ground maybe the reason and if I should go getc a new wire and put it on the strut tower where it normally should be? thanks

 

Why don't we just try it?

 

you CANNOT run a ground wire to your fuse box's mounting points....you fuse block will be shorted out sooner or later.