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Power from Alternator


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hoaxs 
Copper - Posts: 95
Copper spacespace
Joined: December 06, 2004
Location: United States
Posted: February 21, 2005 at 8:55 PM / IP Logged  
Is it ok to get your power for your amp from the Alternator.
Hurry get me a steel hanger, elec tape, zip ties, a monkey and a snorgle. trust me i've ran wires with less
wayland1985 
Silver - Posts: 353
Silver spacespace
Joined: December 31, 2003
Location: United States
Posted: February 21, 2005 at 9:26 PM / IP Logged  
That is basically what you're doing with it wired to the battery... The alternator power wires go straight to the battery...   
Keep your amplifier connected to the battery.
~wayland
oonikfraleyoo 
Gold - Posts: 1,069
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Joined: January 04, 2005
Location: United States
Posted: February 21, 2005 at 11:11 PM / IP Logged  
I think thats about the only way to get power for your amp. Besides a generator in the trunk.
Nik
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Check it out.
Master Asylum 
Silver - Posts: 400
Silver spacespace
Joined: November 05, 2004
Location: United States
Posted: February 22, 2005 at 7:11 AM / IP Logged  

I'd think the statement "Your alternator power cables go straight to your battery" is not only wrong but a very bad thing to say... I just recently learned a considerable amout about the alternator functioning in my car and here is what I've gotten:

Alternator power cable goes to starter on the battery side of it, then the power runs from there to the battery, then wherever else you need it.

Trying to run it straight to the battery could be very bad. (Also making sure the voltage regulator is good helps, bastards.)

BTW, stay away from Alterstart. They aren't willing to take care of the damage their product has done to my vehicle because they made an ineffective component. Going to consult a legal counselor about the ethics of business on this, if I can't hold them to it, welcome to a pissed off ranter. (STAY LOCAL)

1998 Monte Carlo w/
Eclipse CD8454
2xRockford 5.25" Power 2-way T152C
2xRockford 6"x9" Punch 3-way FRC4369
1xMemphis 16-MCH1300 5-channel
2xKicker 12" L5 Solobaric-2 Ohm
stevdart 
Platinum - Posts: 5,816
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Joined: January 24, 2004
Location: Pennsylvania, United States
Posted: February 22, 2005 at 8:22 AM / IP Logged  

Asylum, the starter motor is fed with battery power (the battery "cranks" the engine).  The alternator doesn't generate power until the engine is running. 

Power wiring in the engine bay can be upgraded, but left connected to exactly the same components as the manufacturer  made the system.  Accessories, such as amplifiers, are connected to the battery.  There are some wheels that should not be reinvented.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Master Asylum 
Silver - Posts: 400
Silver spacespace
Joined: November 05, 2004
Location: United States
Posted: February 22, 2005 at 10:18 AM / IP Logged  
I'm very aware of how the battery/starter/alternator interact now. But I haven't ever heard of anyone ever connecting it directly to the battery.
1998 Monte Carlo w/
Eclipse CD8454
2xRockford 5.25" Power 2-way T152C
2xRockford 6"x9" Punch 3-way FRC4369
1xMemphis 16-MCH1300 5-channel
2xKicker 12" L5 Solobaric-2 Ohm
haemphyst 
Platinum - Posts: 5,052
Platinum spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: February 22, 2005 at 10:49 AM / IP Logged  
hoaxs wrote:
Is it ok to get your power for your amp from the Alternator.
Yes, but a CONDITIONAL yes. Your chances of getting noise are MUCH higher doing this. The battery is NOT ONLY a reserve for when the alternator cannot keep up, (and we all know this is a condition that should never happen, if your alternator is up to the task) but it is a filter as well. This is why you should get your power from the positive battery post.
Master Asylum wrote:
I'm very aware of how the battery/starter/alternator interact now. But I haven't ever heard of anyone ever connecting it directly to the battery.
Well, now you have. My alternator output post is wire DIRECTLY to my battery through a #4 cable, with a 150A fuse and a 150A shunt resistor, for my current monitor in the dash. I was forced into this, because there was NO WAY a #4 cable was going to be able to be connected to my primary fuse block. The alternator output in MOST cars today goes to a primary fuse block under the hood, where all of the accessories are tapped, with a single lead running out to the battery for charging purposes. When I wired directly to the battery, I also upgraded the lead that was FROM the fuse block to a #8 with custom made high current capable terminals. This then made it the TO the fuse block cable. It is still connected to the battery, throught the big ol' Monster terminals that I installed, and actually, most of my accessories now run better. Probably, this is due to the higher current path of a #8, rather than the #10 that comes with the car.
Basically what I am saying, is it CAN be done, but usually there is a great deal of effort to do so. If you are willing to go to this effort, and understand COMPLETELY what you are doing first, go for it...
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Master Asylum 
Silver - Posts: 400
Silver spacespace
Joined: November 05, 2004
Location: United States
Posted: February 22, 2005 at 10:54 AM / IP Logged  
The completely understanding part is the concern I have. Electrical systems are dangerous if one bad faulty move is made and can result in a new car at your expense. Just don't think anyone should be advising people to do it on here. :)
1998 Monte Carlo w/
Eclipse CD8454
2xRockford 5.25" Power 2-way T152C
2xRockford 6"x9" Punch 3-way FRC4369
1xMemphis 16-MCH1300 5-channel
2xKicker 12" L5 Solobaric-2 Ohm
Alpine Guy 
Platinum - Posts: 2,478
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: October 18, 2003
Location: Canada
Posted: February 22, 2005 at 12:02 PM / IP Logged  
If you return that pos alterstart i can get you about a 5% discount on a mechman alt , which by the way they test before they ship....
2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.
hoaxs 
Copper - Posts: 95
Copper spacespace
Joined: December 06, 2004
Location: United States
Posted: February 22, 2005 at 2:29 PM / IP Logged  
thanks for the help guys, the only reason i ask is because ran wire for one of my friends and he didn't have enough power wire to get to the battery so i just hooked it up to the ALT.  I relised it wasn't going to harm anything but just wanted to double check.
Hurry get me a steel hanger, elec tape, zip ties, a monkey and a snorgle. trust me i've ran wires with less
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