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Old 05-02-2003, 03:29 AM   #1
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Default Blowing fuses

I keep blowing fuses in the power line for my amp just after the battery. Have blown a 60 amp and now a 80 amp one. Anybody know why it keeps doing it? It only happens when I crank it up over like 3/4 volume or so. I may just have to keep the volume at a decent lvl. Mine you it is still darn loud anyway just would like to use entire volume **** now and then.
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Old 05-02-2003, 12:29 PM   #2
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check your ground...is that really good and solid?....also where is the fuse? is it right by the battery?....what size wire are you using are your REM
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Old 05-02-2003, 02:59 PM   #3
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Sounds like you fuse rating maybe a little low. What wattage are you running? Your system might be pulling over 60 Ampies, therfore it would blow your fuse.

The fuse up front is intended to protect from your power wire grounding to the car chassis on its run to trunk. I use a 150 Amp fuses, because if it does short to chassis it will blow almost any size fuse before it starts a fire.

Another cause could be an amplifier shorting in its power supply, thus causing it to suck enough juice from the battery to pop thy fuse.

Make sure you have additional fuses close to the amps to protect them from damage.
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Old 05-02-2003, 03:16 PM   #4
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I dunno about your setup but I HIGHLY doubt your pulling that many amps to be blowing the fuse like that. As you can read in my sig I have a pretty big system and its all fed from a 1gauge wire from the battery and I'm using a 60amp fuse. I did have a similar problem when I blew about 4 fuses in a row. I found out it was one of the switches I use to control my fans that had shorted and was grounding to the 1400w amp. (I had them both grounded next to eachother). As a test I clipped the ground wire from the switch (Which only turned on a little light inside it) and since then I've not blown a fuse. SO look at all your grounds and relook at anything you've recently installed.


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Old 05-02-2003, 04:20 PM   #5
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Could be true, but he'* only blowing fuses when he turns it up. If gounds were shorting together it would blow all the time. Even so I agree that you should always check your wiring when you have problems
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Old 05-02-2003, 04:22 PM   #6
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Mine was actually randomly blowing them, not sure if this can just be blamed on the switch but there was several times when I didn't even touch the switch and it blew. But yeah bottom line, check wiring. Next thing is to attach a diode inline

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Old 05-03-2003, 02:42 AM   #7
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Yeah I'll have to check the ground for the amp tomarrow. It only blows the fuse when I crank it up over 3/4'* or so. Have blown a 60 and an 80 amp fuse. Best Buy probably didn't ground the amp properly and it blows the fuse when I turn it up too loud. The amp is a rockford 750s when I have bridged to my 12" alpine type r'*. I can live with it if I can't turn it up over 3/4'* cause it is real damn loud when you turn it up that high. The fuse is about maybe a foot behind the battery in the engine compartment. The wire is 4 gage stuff. Btw would a capacitor near the amp make a big difference making sure the amp is getting the right amount of power? Was looking at a few but they are kinda spendy.
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Old 05-03-2003, 04:17 AM   #8
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only use the cap if your lights dim when the bass hits, if it does then your alternator is being pushed too far and can burn out. Just happened to a buddy of mine the other day.
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Old 05-04-2003, 09:28 PM   #9
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look at your wires to the amp. that is your problem. metal is touching the wire. trust me...it happened to me I blew an 80 amp fuse by shutting the door on the wire.
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