blowing fuses
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=19389
Printed Date: September 09, 2025 at 12:16 AM
Topic: blowing fuses
Posted By: gold427
Subject: blowing fuses
Date Posted: September 27, 2003 at 7:29 PM
I recently installed a new cd player and now when i turn it up to a mid-high level it blows the fuse under the hood. Its a 7.5 amp fuse and that is what is speced for the car so i dont think going to a 10 amp fuse would be key. Prior to the new cd player installed are 2 amps, 200w for the subs and 180w for the mids and highs. Everything was working fine before the new unit. Use to have a cd player along with an eq before they got stolen but now with just the cd player in alone i keep blowing fuses like i said at mid high range noise levels. I also already checked the wiring for shorts and found none. any suggestions?
Replies:
Posted By: bberman1
Date Posted: September 27, 2003 at 7:56 PM
What is the make and model of your new Head Unit?
Posted By: NowYaKnow
Date Posted: September 27, 2003 at 8:36 PM
Since most CD players come with a 10 amp fuse in the back of them I don't think that 7.5 amp fuse is gonna feed both your cd player and whatever else is on the circuit. If it comes down to it run a dedicated power line from the ignition harness (with a fuse) to your cd player. Good luck
Posted By: gold427
Date Posted: September 28, 2003 at 7:13 AM
its a pioneer 50wx4 cd player
Posted By: gold427
Date Posted: September 28, 2003 at 7:16 AM
i had an eq and cd player hooked up in there before and it never blew the 7.5a fuse along with the 2 amps and
Posted By: sounds
Date Posted: September 28, 2003 at 9:53 AM
Bottom line is there is no way a 7.5amp fuse can run a head unit at full volume let alone a head unit and a pair of amps i suggest you inrease the fuse amperage to at least 40 amps and see.
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puresound
Posted By: Velocity Motors
Date Posted: September 28, 2003 at 3:41 PM
Do what NowYaKnow suggested an run a designated power wire for these components. If you just keep increasing the amperage of the fuse on the same wire, you run the risk of a fire or melting the wiring that the components are attached to.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: sounds
Date Posted: September 28, 2003 at 4:49 PM
I seem to be missing something here,you said you have two amps and a eq on the original hook-up so therefore ,the fuse that is being blown is it coming off a main power wire that you installed to run the entire system or is it the factory installed fuse in that black box that also houses the headlamp fuses and relays.
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puresound
Posted By: LAUR
Date Posted: September 28, 2003 at 10:59 PM
Check the ground wire .
Posted By: CruisinS&S
Date Posted: September 29, 2003 at 11:42 AM
check all of your speaker wire connections too. If they are out of phase that result in a blown fuse at high levels
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Cruisin Security And Sounds
Posted By: superstreet786
Date Posted: October 07, 2003 at 8:23 PM
try the bigger fuse but if that blows you will know there is some electrical problem
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