Engine Ground big three still dimming??

[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.

 

[DidUHearThat? 10+ year member]

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.

It's far more likely that she has a tiny alt that can't keep up.

 

[faiz23 10+ year member]

hey i have a couple thing i want to ask,

i am worried about the ground for the amp since it was close to the spare tire well. i stripped it using a dremel to bare metal and that used a big 14mm bolt with a steel thread to secure it with star washer type lock. it was slight loose but i secured it to the point it was tight.

i do not want to drill another hole, there is a big torx bolt that hold the rear setbelt down, i want to see if i can secure the ground to that and see if it helps any with dimming, i will add the battery if needed, then if that does not cure it, i would like to try a 1/0 run from the front batt to the rear for ground. move the engine to batt 1/0 run and relocate to engine to chassis. i will check resistance before i move the ground at all and then go from there, but i think i need a good solid ground from the front and possibly a small battery or atleast me hopes lol.

my plan is to upgrade on her car to a hid retrofit soon which should lessen the load.

 

[Etac 10+ year member]

It's far more likely that she has a tiny alt that can't keep up.

i respectfully disagree. a 130 amp alt should be enough for that, unless you have a real shitty battery

i used to own a 2000 cougar actually.. thing had so many electrical problems i sold after a year and a half

 

[SWFL 10+ year member]

you problem is the ground I would say since you prob connected to the sheet metal of the car and not the actual frame. Connect to the actual frame of the car to see if that helps

 

[faiz23 10+ year member]

It's far more likely that she has a tiny alt that can't keep up.

alt is 130 amp i think it should be fine with big three, stinger spv70 battery, and only pushing a jl 1000/1 and 12w7.

i think it is a ground and want to try a run of ground, is it ghetto if i run it from the battery to the rear out the car to test while it is park just throw it over the top and into the hatch to see if it fixes it. i wont be moving at all.

 

[Etac 10+ year member]

alt is 130 amp i think it should be fine with big three, stinger spv70 battery, and only pushing a jl 1000/1 and 12w7.
i think it is a ground and want to try a run of ground, is it ghetto if i run it from the battery to the rear out the car to test while it is park just throw it over the top and into the hatch to see if it fixes it. i wont be moving at all.

lol i used jumper cables runnng outside the car form the trunk to the battery once to test something

 

[faiz23 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.

you are right about the stock speakers but i would rather not be shot in the groin as i am awaiting bad weather. i have a pair of focal polyglass v1 i want to throw in the car but i am also waiting for some raammat and ensolite, overkill.

i already ran the 4 channel rca for the amp and a remote wire as well.

i will hopefully get a kinetik 800 on a trade and slap that in there along withe jl 450/4, a ground wire from the front, deadner in random places, and a pair of 6x8 or 6.5" in the rear.

what do you honestly think in my car i plan to run the 165k2p active of the 450/4 and use a pioneer 880prs to tune it.

On the cougar should i use her stock rear fill and run the polyglass 165vr active off the 450/4. i threw a panasonic in there with crossover, 7 band eq. so i would need to use the slopes and crossover on the amp along with the x10 switch and bandpass.

she wants rear fill and atleast with the headunit i can control the amount of power running to the rear fill.

 

[vandiar2 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

hey man I am having the exact same voltage drop in my car.. the exact same. the lowest it will get is 11.8.. on certain songs it stays around 12-12.8 ish. I have a batcap 2000 in the back, both amps grounded to it and the batcap is grounded to the trunk of the car. I just ordered some knu wire to run a ground from the batcap to the front battery instead of grounding in the trunk. soon as I get it and put it in I will let you know if it stabilizes my voltage any.

 

[SPL Blazer 10+ year member]

hey man I am having the exact same voltage drop in my car.. the exact same. the lowest it will get is 11.8.. on certain songs it stays around 12-12.8 ish. I have a batcap 2000 in the back, both amps grounded to it and the batcap is grounded to the trunk of the car. I just ordered some knu wire to run a ground from the batcap to the front battery instead of grounding in the trunk. soon as I get it and put it in I will let you know if it stabilizes my voltage any.

I'd recommend leaving the ground in the trunk, adding a run from the front to the rear will help, but it'll be better to leave the original ground in the trunk.

 

[PioneerSPL1990 10+ year member]

it sounds like something is seriously wrong, i have almost 3800 watts rms in my car and i get some dimming with a kinetik 1800 in the back, 2 runs of power in 1/0, everything double grounded in 1/0 and the big 3 in single 1/0. and my alt in only 102 amps. it takes me about 20 seconds of musical bass to dip below 12V i sit at 14.8V full charge.