Read as many of the tech articles as you can digest on http://www.madelectrical.com/electrical-tech.shtml .  Before my car was rewired using a Centech kit, just adding an 8 gauge wire from the alternator output post to the horn relay boosted the voltage to the fuse panel. 
 
The electrical components inside the car (dash lights, gauges, radio, etc.) get power from the horn relay.  In the stock system there is a voltage drop from the alt. to the horn relay.  By adding an 8 gauge wire directly from the alt. to the horn relay you increase the voltage that the horn relay has, thereby increasing the voltage to the fuse panel. 
 
I'm not an expert with electrical systems by ANY stretch of the imagination, but this has been my experience and the tech articles on madelectrical give the reasoning behind it in more detail.   Hope that helps.  BTW: The voltage drop is the same reason why you should add relays to the headlights because they're not getting enough volts.  When you get more voltage to the headlights, they will be brighter. 
 
BTW:  Having brand new wires throughout the car is AWESOME :)  Everything's bright and it doesn't flicker! :) 
 
 
Rodney.
71 Chevelle
El Mirage, AZ
 
----- Original Message -----
From: vmckague
Sent: Friday, January 03, 2003 4:04 PM
Subject: Re: [Chevelle-List] low volts part 3

Wayne, If I understand what your saying is,tell me if I'm wrong, the volt meter where it is hooked up is reading the correct voltage for the circuit it is wired in too. So some where in that circuit I don't have a good connection. Correct? If I have 14.8 volts at the battery at all times it should be okay to drive the car and use the accessories. Right? Thanks for your time . Vernon
----- Original Message -----
From: Wayne
Sent: Friday, January 03, 2003 2:53 PM
Subject: Re: [Chevelle-List] low volts part 3

You do not have it hooked up backwards or it would not deflect the needle at all. as for hooked up wrong.
A volt meter will read voltage from where it's inserted/sorced to goround, where as a  Amp meter is inline from source to the storage  Battery.
I would see where the + voltage source is taped from. There are a nuber ofgood source voltage inside the car. The fused assy, is one, the 14ga black-orange is another---- Original Message -----
From: vmckague
Sent: Friday, January 03, 2003 2:53 PM
Subject: [Chevelle-List] low volts part 3

Well I put a volt meter on the battery with the motor running at a fast idle and had 14.8 volts. With  the blower fan, head lights and wipers on I still had over 14 volts. Is this OK. The volt meter in the car started at 12 volts at high idle and as more acc. were added it went down. to around 11 volts. I guess my volt meter in the car is not reading correctly or could it be hooked up the wrong way? I had a friend hook this up for me so I don't really know what it is hooked up to. Is it possible to have it hooked  up backward? Thanks, Vernon s

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