Big 3 Done, Voltage Drops Still to 9 and Cuts Out

[Nexson 10+ year member]

I am adding a video as soon as it is done uploading.

 

[jmanpc 5,000+ posts]

I've been trying to help him, and I'm out of ideas... All I can say is new battery / power cable, although 4 awg ought to be fine for a 300/4 and a 500/1. I just installed a KX600.1 in a 99 Civic with stock electrical, and it hardly dims.

I've already gotten him to do the big 3 and change his grounds, but that didn't seem to help. I'm baffled.

 

[Freelander 10+ year member]

is he local to jacksonville too?

 

[jmanpc 5,000+ posts]

no, he's in s. florida

 

[Nexson 10+ year member]

I'm not local, but Jordan has been a great help online.

 

[jmanpc 5,000+ posts]

go to autozone and get your charging system checked?

although, didnt you say it doesnt drop so bad at the battery?

 

[wesl56 10+ year member]

just for shits n giggles, disconnect the amps from the powa and check the volts again

im probably leaning more towards just a bad connection somewhere tho

 

[ephyouckay 10+ year member]

there has to something wrong in the wiring or something.

I say, upgrade fuse, upgrade wiring and see where that takes you. if not your going to need a bigger alt. I doubt the battery will do much if your voltage is dropping that significantly. IF your car shuts off due to heavy bass with the big 3, your gonna pretty much need a bigger alt.

Your battery voltage seems fine during idle telling me your battery is find and upgrading wont help much.

upgrade to 1/0 and get a bigger anl fuse and see what happens with that...

 

[Nexson 10+ year member]

vid ina second

 

[CaliforniabOY5 10+ year member]

:tunning in:

 

[Nexson 10+ year member]

ok guys here's the video!, sorry for the mess of wires, anyhow you can see the voltage drops, it went to 10, when it is at full tilt it drops to 9. You can hear the music from the car going in and out, music remains playing from the stock tweetrs the car came with since they are still wired, but everything amped goes out which is basically all the speakers.

http://www.youtube.com/watch?v=VZVcC8NkBn0

 

[ephyouckay 10+ year member]

i think its a faulty fuse...

At first i thought his enitre car turned off but this isnt the case. only his amps shutoff or anything that is powered.

told him to swap a new 150a fuse in to see if that does anything.

 

[Freelander 10+ year member]

Have your alt checked....thats the only thing I can think of is that the alt can keep up with the battery keeping it charged but it can't keep up with the increased load from the system.

I bet the regulator or something else is about to go out in the alternator.

 

[casper97ta 10+ year member]

Change your wire to all 1/0 gauge before you do anything else. I know it shouldnt be nessesary, but just to be sure that would be the first thing I would do.

 

[ephyouckay 10+ year member]

do this:

1. change fuse and troubleshoot from there

2. have alternator checked (if it can be done easily and for cheap)

3. upgrade to 1/0