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Engine Ground big three still dimming??
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<blockquote data-quote="faiz23" data-source="post: 5727450" data-attributes="member: 607241"><p>hey guys weather was a little better still cold and windy but good chance to get couple hours of work in</p><p></p><p>First thing i did was remove the battery and relocate the engine to chassis wire which use to be setup like the stock 8 gauge running to the negative terminal. Now the engine to chassis is grounded to the chassis at the same location where the stock battery ground is and the additional chassis to battery ground.</p><p></p><p>So i know have</p><p></p><p>1/0 gauge from alt to battery fused with 250 amp anl</p><p></p><p>1/0 gauge from battery to chassis</p><p></p><p>1/0 gauge from engine to chassis(same grounding point as battery to chassis)</p><p></p><p>i used a dremel and stripped all the paint in the surrounding area till i saw bare metal and then stripped more lol.</p><p></p><p>i check resistance on the ground i ran, my multimeter leads show .5ohm with touching the leads together,</p><p></p><p>when i removed the battery from the car, and checked the ground where i have the big three chassis ground and the ground in the rear. i disconnected the neg from the amp and shoved the lead into the 1/0 gauge. i get around .9ohm-1.1ohm. i figured with the .5 ohm from the lead already that would have my ground with a resistance of .4-.6 ohm.</p><p></p><p>i think the ground is good and i checked the seat belt bolt and couple other places on the car and all of them showed me the same resistance as my ground. Couple places showed resistance of like 1.5ohm.</p><p></p><p>i think my ground is goood, i threw a 150amp circuit breaker on the 1/0 gauge wire which runs to the back.</p><p></p><p>my voltage has stabilized my car starts around 14.3 and then on medium volume i drop to about 13.8-14.</p><p></p><p>if i have been doing heavy bass notes for like 5 min the voltage stays around 13.5-13.8.</p><p></p><p>turning on the headlights, ac on full, break light, hazard, bass on full, high beams my voltage drops to about 11.6-12.2.</p><p></p><p>i know i am gonna throw a battery in the back to stiffen it up and add more reserve.</p><p></p><p>i have a stinger spv20 coming and i already have a spv 70 sitting.</p><p></p><p>now this is my girls car and she never even goes past 60% volume, at around 75-80 is when i get heavy drops and dimming.</p><p></p><p>i do not want to throw such a big battery like the spv70 in the back it will be a waste, i already have a spv70 in the front and thought about throwing a spv20.</p><p></p><p>here is the info on the battery,</p><p></p><p><a href="http://www.sonicelectronix.com/item_16771_Stinger+SPV20.html" target="_blank">http://www.sonicelectronix.com/item_16771_Stinger+SPV20.html</a></p><p></p><p>i figure being a girl and even once i add my jl 450/4 v2, i think the spv20 should take care of her, if it was my car i know i love to jam my shit and i would throw a bigger batt.</p><p></p><p>what do you guys think and should i throw and isolator or just run it parallel since it is a small batt. I think to help out i might run a 1/0 gauge ground from the front to the back to help out.</p><p></p><p>so positive from batt to positive on batt in rear, fused twice,</p><p></p><p>negative from chassis and neg from front batt to rear batt.</p></blockquote><p></p>
[QUOTE="faiz23, post: 5727450, member: 607241"] hey guys weather was a little better still cold and windy but good chance to get couple hours of work in First thing i did was remove the battery and relocate the engine to chassis wire which use to be setup like the stock 8 gauge running to the negative terminal. Now the engine to chassis is grounded to the chassis at the same location where the stock battery ground is and the additional chassis to battery ground. So i know have 1/0 gauge from alt to battery fused with 250 amp anl 1/0 gauge from battery to chassis 1/0 gauge from engine to chassis(same grounding point as battery to chassis) i used a dremel and stripped all the paint in the surrounding area till i saw bare metal and then stripped more lol. i check resistance on the ground i ran, my multimeter leads show .5ohm with touching the leads together, when i removed the battery from the car, and checked the ground where i have the big three chassis ground and the ground in the rear. i disconnected the neg from the amp and shoved the lead into the 1/0 gauge. i get around .9ohm-1.1ohm. i figured with the .5 ohm from the lead already that would have my ground with a resistance of .4-.6 ohm. i think the ground is good and i checked the seat belt bolt and couple other places on the car and all of them showed me the same resistance as my ground. Couple places showed resistance of like 1.5ohm. i think my ground is goood, i threw a 150amp circuit breaker on the 1/0 gauge wire which runs to the back. my voltage has stabilized my car starts around 14.3 and then on medium volume i drop to about 13.8-14. if i have been doing heavy bass notes for like 5 min the voltage stays around 13.5-13.8. turning on the headlights, ac on full, break light, hazard, bass on full, high beams my voltage drops to about 11.6-12.2. i know i am gonna throw a battery in the back to stiffen it up and add more reserve. i have a stinger spv20 coming and i already have a spv 70 sitting. now this is my girls car and she never even goes past 60% volume, at around 75-80 is when i get heavy drops and dimming. i do not want to throw such a big battery like the spv70 in the back it will be a waste, i already have a spv70 in the front and thought about throwing a spv20. here is the info on the battery, [URL="http://www.sonicelectronix.com/item_16771_Stinger+SPV20.html"]http://www.sonicelectronix.com/item_16771_Stinger+SPV20.html[/URL] i figure being a girl and even once i add my jl 450/4 v2, i think the spv20 should take care of her, if it was my car i know i love to jam my shit and i would throw a bigger batt. what do you guys think and should i throw and isolator or just run it parallel since it is a small batt. I think to help out i might run a 1/0 gauge ground from the front to the back to help out. so positive from batt to positive on batt in rear, fused twice, negative from chassis and neg from front batt to rear batt. [/QUOTE]
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Engine Ground big three still dimming??
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