need serious help(Car audio)

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so, for some reason my car kept blowing the fuse(7.5amp) that controlled the radio, door chime, automatic seatbelts and dome light.

i got this fixed. however, it was fixed randomly. i blew about 4 fuses in a row. the next day, as my car was running(other times it was not), i put the fuse in. it didn't blow and everything seemed to be working perfectly - only not.

i get in my car and notice the cd player is working and actually reading the disk, but no sound

i thought my sub and amp could have been doing the problem. i check that out, and the fuse on the amp was literally melted. the prong of the fuse snapped off in the amp.


i tear my Cd player out, take it apart and look for any blackness around the chip. now usually, if a cd player goes, you're gonna smell or see something. i saw and smelled nothing.


my friend hooked this and my sub up. i'm almost certain it was a job done well as he has rebuilt many cars and installed even more stereos. he knows what he's doing.

i would get a hold of him, but he's up in north dakota for who knows how long.

so, does anybody have any idea as to what might be causing this??
the cd player seems good, so i don't know where to look first.

any help is appreciated.

oh, and the stereo was a pioneer .

[spectre184]

I assume the 7.5 amp fuse is for the FACTORY radio? If so and you added an aftermarket you may be pulling to much current and why you are blowing the fuse. You may need to find another source of swicthed 12v. Get volt meter and check any empty fuse slots to see if there is switched 12v. May want to tap (depending on fuze type, use a spade lug) off of one and put fuse in (usually aftermarket radios have fuse on there 12v power wire).

As far as sub amp, well check condition of wireing. If he ran from battery to trunk and didnt use rubber gromet thru firewall then the wire could have chaffed and short out to ground. He should have put fuse on battery for amp to. Or what you could do is disconnect wire from its power source and your amp and get an ohm meter and see if the wire is shorted to ground.

[-Tab]

I assume the 7.5 amp fuse is for the FACTORY radio? If so and you added an aftermarket you may be pulling to much current and why you are blowing the fuse. You may need to find another source of swicthed 12v. Get volt meter and check any empty fuse

possibly, but you don't think it wouldn't have done it before this. i had the CD player put in summer of '04, and by the look of how the factory stereo was in my car, the previous owner must have had an aftermarket player

anyway, i'll give that a shot.


thanks spectre!

[skife]

how's the ground for the sub amp?

a buddy of mine kept blowing fuses and didn't know why...

come to find out the kid he had hook it up for him had the ground wire hooked up to "12v+" and the power wire from the batter hooked to "Gnd"

[-Tab]

how's the ground for the sub amp?

a buddy of mine kept blowing fuses and didn't know why...

come to find out the kid he had hook it up for him had the ground wire hooked up to "12v+" and the power wire from the batter hooked to "Gnd"

the ground for the sub amp was good.

the thing is, my stereo still won't work without the sub and amb completely out of my car. there is no sound coming out of my stock speakers whatsoever.

[AcemanPB]

Are you running your car speakers through an external amp or are they powered by the CD players internal amp? I know my CD player has a setting to cut off the internal amp if you are only using the the preamps.