1989 Mustang charging issues

[Hella Good]

..probably a well overused topic of disscussion.

Always worried that the alternator was barely charging the battery (the car would barely turn over sometimes), and after two alternators, I decided to go with a one wire 130 amp 3G setup.

Heres what I did:

1. One wire 3G 130 amp with four gauge to the battery (pry a 'lil over 6 feet).
2. From the battery 4 gauge to the starter relay.
3. 2 Gauge to the starter from the starter relay (damn near 9 feet 'cos the relay is in the inner fender).
4. Brand new Optima Deep cycle battery.
5. Rerouted starter relay and all drivers side engine compartment wiring through the inside of the fender.

Here's the issues:

1. There's a lot more voltage (14.1v) BUT, after the car sits will barely turn over again.
2. Where should the ground wires (large wire and small wire) from the battery attach to? I cannot remember where either of these should go. Whats the ideal ground place?
3. Aluminum bracket on the alternator. Is this a problem? Do I need to run a ground wire to the bolts (this is a Paxton supercharged car and the Paxton alternator bracket is aluminum too).

help!

[1quick95]

You can try running a extra ground wire from the engine to the body to see if there is a difference.Has the battery ever gone completely dead?Sometimes when a deep cycle battery goes dead,its shot for good.

[5150 LX]

Is your battery relocated to the trunk???

[Hella Good]

Is your battery relocated to the trunk???

no. I'm still running it in the left front side in the engine compartment. However I do have a bunch of 27N deep cycles that I use with solar panels (a whole different topic in itself) and I've been considering that.

[Hella Good]

You can try running a extra ground wire from the engine to the body to see if there is a difference.Has the battery ever gone completely dead?Sometimes when a deep cycle battery goes dead,its shot for good.

no, 1quick95, it hasn't..

[Hella Good]

..I got it working.. 2 gauge to the motor right above the oil filter.. there's a great item on Corral about this. Now I got 13.5 -14 volts with ice, lights, wipers and big stereo with 2 large amps firing 6 channels of audio. Contrary to the badmouthing that one wire alternators get, this car fires up and is charging the battery without having to goose the throttle to excite the alternator. In a month, this alternator hasn't let me down and is substantially more of an improvement than any of my 2 previous alternators (one out of a '93 and a Jeg's "high performance" one) in this car.

[1quick95]

At least it was something simple :)