When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
If the system was overloaded you would risk damaging whatever component the fuse is going to. I can't really think of any way the electrical system would get overloaded besides a busted voltage regulator on the alternator, which happened to me once. My battery was pushing 20V at 2000RPM :rofl: I was so afraid my airbags were going to explode or I was going to fry my ECU when I drove to autozone to get a new alt h:
But seriously, don't even bother. Just wedge a bullet in there.
if the fuse blew... chances are some component is fuxxored. putting in a higher fuse risks damaging that component even more, as well as burning out wires that are not gauged to handle higher current.
reason i ask is i just recently noticed the backup fuse in my underhood box had a 10a instead of the 7.5a that was supposed to be there. i quickly replaced it with the right amp. this is the first time i noticed it after constantly going in and out of it trying to fix another problem.