What is a proper ground?
#26
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They should understand that.
I thought the same thing when I heard it.
I may put my battery in the trunk and run a block to the front of the car.
(more to open up space for some underhood mods but also to keep the battery in better shape since the heat kills them quicker.
I thought the same thing when I heard it.
I may put my battery in the trunk and run a block to the front of the car.
(more to open up space for some underhood mods but also to keep the battery in better shape since the heat kills them quicker.
#27
Originally Posted by 4 years to Supercharge
They should understand that.
I thought the same thing when I heard it.
I may put my battery in the trunk and run a block to the front of the car.
(more to open up space for some underhood mods but also to keep the battery in better shape since the heat kills them quicker.
I thought the same thing when I heard it.
I may put my battery in the trunk and run a block to the front of the car.
(more to open up space for some underhood mods but also to keep the battery in better shape since the heat kills them quicker.
I was planning on doing this at one point but there are MANY things that would need to be fused... I wasn't excited about running two 1/0 gauge wires all the way to the back either...
#28
Extraordinary Engineering
Originally Posted by jstkilntim
While taking these readings and focusing on low impedence, I realized that I have foolishly been overlooking one of the most crucial elements of any electrical circuit. If I have a #2 power wire (which I plan on using for about 1300W), what makes me think I can ground this system to the chassis anyway when the largest ground from the battery is a #4? (Without tracing the 3 ground wires through the loom, I am assuming the large one goes to the starter & the smaller 2 to various body or electrical components.) Anyone remember which way current flows? I see catastophic failure in the future! The ground wire ALWAYS has to be as large, or larger, than the power wire. Why do we forget the basic stuff?
#31
www.evoperform.com
i would run a suitable ground wire through the vehicle to the grounding location in the engine bay, as well as grounding in the trunk. you could use of the nuts holding the bracket that attaches to the struts in the back
#33
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well, being a unibody construction, your ignition system will probably not like you unless you make sure you have a very good ground path to the battery
#37
www.evoperform.com
the weight isnt really an issue, as it will only be a few pounds, and if you run it down the passenger, it will help with your weight distribution, helping offset drivers weight.
#38
Son what is your Alibi?
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I'm about to put a new set in so if i burn out the old ones then i'll run the extra wire; its almost like if i have to run the extra wire it would be more worthwile mouting the battery lower but still over the front wheels.
Adding weight is never a good idea lurch, not more than I need would be best.
I'm only removing 20-25lbs by the lighter battery, 5lbs of neg cable on top of the 5lbs for the positve wire is 50% of the weight being taken out.
Adding weight is never a good idea lurch, not more than I need would be best.
I'm only removing 20-25lbs by the lighter battery, 5lbs of neg cable on top of the 5lbs for the positve wire is 50% of the weight being taken out.
Last edited by PoLaK; 04-26-2007 at 06:50 PM.
#39
www.evoperform.com
ok, i tried giving good advice. anyway, the kicker 4 guage power wire kit, pk4, which contains 20 feet of 4 ga power, 5 ft of 4 guage ground, remote wire, connectors, and anl fuse holder, only weighs 7 pounds. that means that for about 17 feet of 4 guage kicker wire, assuming 1 lb for packaging and other stuff, its about 4 lbs. yeah i know its only 1 lb less than 5 lbs, but thats the way i would do it. of course, i have only been doing car audio/performance for 10 years, so what do i know
#41
www.evoperform.com
i was using that as a reference. i know what you are trying to do. move the battery into the trunk, get some weight off the front wheels and move it into the back, most likely on the passenger side to help offset the weight of the driver. my fear is that the voltage drop from the resistance through the chassis will cause you problems, with charging of the battery, with voltage problems, especially in the engine compartment with sensors/igniion, and starting the car, which we all know is sometimes a bear with the stock setup, and if you have a voltage drop because of a poor ground, will be even more of a pain in the ***. i am on aim practically 24/7, though not always at my puter, if you want, hit me up on aim egcivichatch
#43
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Guys I made a stupid mistake.-(puts on flame suit) While replacing the car battery I accidentally(not thinking) attached each ground end to both the Pos & Neg. battery post. -At that point a hugh spark and melted the negative post. I come to realize that I was only to have both end of the "Lineage Ground" cabels meet with the negative terminal. -Please tell me I didint fry the ECU. Thanks.
#44
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I doubt you killed your ECU. You just shorted the battery. How did you manage to connect a ground to both - and +? Was it a grounding kit or something? Only things likely damaged are the battery and possibly the wiring that shorted it. Oh, and maybe your eyesite if you were looking at the arc (think very big welding arc.)
No handheld multimeter I know of will accurately measure resistances like these on its own. A 4-terminal meter is necessary. The easiest way to accomplish this is to get a current source, such as a lab power supply, and a volt meter (any decent multimeter will do for that part.) You hook the current source up to what you're measuring, and separately connect your volt meter very closely to it. If you run 1A through it, your reading in volts will equal the resistance. The problem with just using a meter is that the tiny connection between your probe tips (or alligator clips or whatever,) have inconsistent resistance that can really show up when measuring tiny resistances like this. I may try this this weekend if there still is no agreement on the best ground in the trunk.
Oh, and welds don't really count as connections. They effectively combine 2 pieces of metal into one, both electrically and mechanically. Unibodies have extremely low resistances, as long as you ground to a large area of them.
What are good sources for cabling, termnals, etc? I'm a cheap skate and believe that copper is copper (though I do appreciate differences in cabling such as insulation heat resistance and small strand size for flexibility.)
No handheld multimeter I know of will accurately measure resistances like these on its own. A 4-terminal meter is necessary. The easiest way to accomplish this is to get a current source, such as a lab power supply, and a volt meter (any decent multimeter will do for that part.) You hook the current source up to what you're measuring, and separately connect your volt meter very closely to it. If you run 1A through it, your reading in volts will equal the resistance. The problem with just using a meter is that the tiny connection between your probe tips (or alligator clips or whatever,) have inconsistent resistance that can really show up when measuring tiny resistances like this. I may try this this weekend if there still is no agreement on the best ground in the trunk.
Oh, and welds don't really count as connections. They effectively combine 2 pieces of metal into one, both electrically and mechanically. Unibodies have extremely low resistances, as long as you ground to a large area of them.
What are good sources for cabling, termnals, etc? I'm a cheap skate and believe that copper is copper (though I do appreciate differences in cabling such as insulation heat resistance and small strand size for flexibility.)
#45
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Thinking about having someone make a plexi copy of the carpeted cover for that storage area, just like you have. My install looks clean under there and having the cover over it causes the amp to overheat on long drives (over 1 hour). Hoping the plexi with a couple fans would be better cooling than not having a cover on it at all (Forced air movement versus static). I suppose to could just size up the factory cover and cut some fan holes in it.... but I don't think it would look all that great...
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