Speakers shorting out for no apparent reason

[billz015]

Alright, installed my rear speakers a few weeks ago. The terminal doesn't designate which is positive and which is negative, so I took a guess that red is positive and black negative, it proved to be good.

Then the screw which was grounding my amp got loose and lost within my trunk, so I made a new one and now my speakers, not the sub and amp keep shorting out randomly.

No bumps, but wide turns.

It's a 98 sentra so you have pull the particle board to get at the rear speakers, I shifted one and it seems like one of the screws holding it in will spark when you shift it.

The speakers are hifonics 6.5", they sound very nice, almost as good as the boston acoustics in the front, and this is just confusing to me.

[billz015]

Well, after pulling my wires a bit further up, seems the negative had been nicked so the copper was exposed and rubbing against the metal, taped it up, and it works with no issues.

[bundy26]

Hey what's up?, what kind of set up do you have in your car?