Engine Ground big three still dimming??

[faiz23 10+ year member]

hey guys i just did the big three on my girlfriends car 2000 mercury cougar. i am only running a 12w7 with a 1000/1 v2. i am getting heavy dimming still.

i have

stinger spv70 upfront

1/0 gauge positive run to the back,

1/0 gauge ground in the trunk stripped paint and made a ground

1/0 gauge alternator to batt +

1/0 gauge battery neg to ground (stock ground under battery)

1/0 gauge engine to battery neg(stock)

i left the stock 8 gauge power run from the alt,

i left the stock 8 gauge battery neg to chassis and added a 1/0 gauge, (i did not strip the paint figured the stock ground is good, but now i think about it i will go back and strip it.)

what is weird the stock wiring for engine to ground was 8 gauge and ran from engine to battery terminal neg, i just added a 1/0 gauge run along with it.

should i reroute that to chassis or it is the same since the neg leads to the chassis

before the big three i was getting heavy dimming and voltage drop to around 11.8. usually stayed around 12v-12.7v.

what is my next step,

i was thinking about adding a battery to the back, i have an extra spv70 should i throw it in the back without an isolator and see if it make a difference. i wanted to use a small battery like a kinetik hc800.

i plan to add a jl 450/4 v2 for the highs and focal polyglass component and pair of 6.5" in the rear

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[bigaudiofanati2 10+ year member]

Mehhhhhhhhhhhh you never need that much power and that much bass. Remove amps and subs get small amp and one or 2 10's call it a day.

 

[ILLCRACKALUV 10+ year member]

Mehhhhhhhhhhhh you never need that much power and that much bass. Remove amps and subs get small amp and one or 2 10's call it a day.

dont post again dumbfvck

put the extra in the back

the isolater is not necessary

 

[IDSkoT 5,000+ posts]

Mehhhhhhhhhhhh you never need that much power and that much bass. Remove amps and subs get small amp and one or 2 10's call it a day.

2x 10"s will take more power than that 1000/1 can produce.

Odds are OP: your stock alternator is small as hell.

Check online to see how many amperes it is. If it's a 90 ampere, then you're screwed. Has to be at least 120 amperes.

Also, make sure your battery is still good, and make sure the cylinders have water.

 

[Korn4Life 5,000+ posts]

He already has a Stinger up front. Sounds like a ground problem... that battery should be big enough for that amp

 

[SPL Blazer 10+ year member]

I'd recommend adding a 0/1 ga ground from the engine block directly to the chassis. The battery might be a little small for 1000 watts plus everything needed to supply the vehicles demands. Since you already have an extra battery try adding it to the rear with a 1/0 ga run, and see if that helps. If not then the alt might be the problem.

 

[faiz23 10+ year member]

Awesome guys thanks for the quick posts,

i have some answers to your questions

the alternator is a 130amp, i went to rockauto and some other websites and checked a 2000 merc cougar v6 would have the 130 amp versus the 90 amp for the 4 banger.

i have the stinger upfront which i got from bumpin buick and it looked pretty new overall and rested at 12.8ish when i got it, i threw it onto a cascade power supply 75 amp smart power supply overnight and then used it in the car couple days there after.

"I'd recommend adding a 0/1 ga ground from the engine block directly to the chassis. The battery might be a little small for 1000 watts plus everything needed to supply the vehicles demands. Since you already have an extra battery try adding it to the rear with a 1/0 ga run, and see if that helps. If not then the alt might be the problem."

I ran a 1/0 from engine stock location to the battery along with stock 8 gauge.

that is what i find wierd everywhere else it says direct to chassis, but ultimately the battery goes to the chassis. will not stripping the stock battery - chassis grounding point make that big of a diff.

i plan to use the spv70 in my car 08 crossfire, but it is in the shop getting a ecu swap.

i can use the battery in the time being to see if it makes a big difference in dimming, but first i want to see if the voltage stabilized at all with the big three.

i imagined some sort of battery would be needed to stiffen and planned on using a smaller battery like a kinetik 800 to stiffen, kinda like 800 farad cap lol FTW type R YO!! lol..

so would do you guys think a battery in the back and do i really need a new 1/0 ground run to the back and relocation of the stock 1/0 ground to battery and move it direct to chassis. Also i will check resistance with a dmm on the ground and see what it is and report back. i will need to use a extension lead of some sort and will check the resistance and subtract from total and report back

thanks

 

[Buck 5,000+ posts]

Mehhhhhhhhhhhh you never need that much power and that much bass. Remove amps and subs get small amp and one or 2 10's call it a day.

Your an idiot //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[Etac 10+ year member]

Your an idiot //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

in some ways, its better than alot of advice i've heard on these forum sometimes

lol

 

[DidUHearThat? 10+ year member]

Mehhhhhhhhhhhh you never need that much power and that much bass. Remove amps and subs get small amp and one or 2 10's call it a day.

Remove your balls and place them in your drawer, you don't need them.

 

[Buck 5,000+ posts]

in some ways, its better than alot of advice i've heard on these forum sometimes
lol

How can he be an audio fanatic and say that a single jl is too loud?

 

[Etac 10+ year member]

How can he be an audio fanatic and say that a single jl is too loud?

maybe hes a sq type of guy //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

and to the OP i think its a bad ground somewhere.. it shouldnt be given that much dimming unless at full tilt, and even then.. it shouldnt be too bad

 

[Buck 5,000+ posts]

maybe hes a sq type of guy //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
and to the OP i think its a bad ground somewhere.. it shouldnt be given that much dimming unless at full tilt, and even then.. it shouldnt be too bad

Damn SQ guys, never like loud bass.

 

[Etac 10+ year member]

Damn SQ guys, never like loud bass.

im going back sealed.. im more a sq kind of guy myself, but i do prefer more bass than "flat", just not peaky bass anymore.. =\

plus i dont really have much of a choice, my alt wont let me get "loud" lol

 

[Buck 5,000+ posts]

im going back sealed.. im more a sq kind of guy myself, but i do prefer more bass than "flat", just not peaky bass anymore.. =\

You can still have a loud sealed setup though.

 

[Etac 10+ year member]

actually i should say I.B. next, finally its almost spring and i have time to do it =]

ok sorry bout thread jacking.. as the OP was saying..

 

[faiz23 10+ year member]

Yeah i am thinking a i need to check the ground and see if that resolves anything,

To the dude that thinks a single JL is too much LOL fail!!!!!!!//content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif//content.invisioncic.com/y282845/emoticons/veryhappy.gif.fec4fed33b4a1279cf10bdd45a039dae.gif

 

[DidUHearThat? 10+ year member]

Damn SQ guys, never like loud bass.

Not true. I'm about SQ, but depending on my mood or the type of music I enjoy bass applied in extreme amounts.

But anyone who has 1kw+ sub systems and stock main speakers should be shot in the groin to prevent them from breeding.

 

[Etac 10+ year member]

Not true. I'm about SQ, but depending on my mood or the type of music I enjoy bass applied in extreme amounts.
But anyone who has 1kw+ sub systems and stock main speakers should be shot in the groin to prevent them from breeding.

i think people should be screened first for what type of music you listen to before you can own even a stock radio.

 

[Pyro_By_Nature 5,000+ posts]

If it hasn't been suggested yet, I would highly recommend a run of 1/0 from front to back for the ground as well. It'll be much more conductive than the body of your vehicle.