I agree with Halfpick. You're not blowing fuses because you only have ONE ground per supply, per car. Very scary because you can have one ground and not know about it unless you get another one in the same supply or something out of the ordinary is noticed or happens.
Ok but would it be also fair to say it depends on 'where' the short is? If the current isn't high enough to over current the fuse then it wont blow? Fair statement? If there is a load between supply and an earth(ground) that suppressors the current flow the fuse wouldn't blow? If there isn't then the current would be high surely?
