So heres the scenario.
I had a vibe cbr15, the sub was turning on and off, and then finally the sub blew. There was external damage to the amp however the amp still worked.
Around about the same time the windscreen wiper sprayers stopped working.
Anyway today I bought a fusion 2 x 12 sub and amp package. Put the wiring in. Turned the car on and the amp didnt turn on, so i went and checked the fuse and it was gone. I thought it may have gone before so i replaced it. Put the new one in and it blew straight away.
Does anything stand out as what may be the problem?