Silverado DUAL Battery Wiring

[h1000101b]

I've read threads on here, read other threads (from other sites), spoke with people etc.

 

MY MAIN GOAL OF THIS POST IS TO SEE IF ANYONE HAS ANY COMMENTS OR SUGGESTIONS ON MY WIRE DIAGRAM BEFORE I PULL MY TRUCK APART. THANK YOU

 

My goal is to add the following:

 

1. High Output Alternator (320A Iraggi)

2. Add Second Battery (Optima Yellow Group Size D34-78)

3. Upgrade All Charging wires to 1/0 Gauge (GP car Audio Power Wire w/Big 3 kit)

 

From what I gather, The route that i'm going to take is as follows:

 

1. Install the Alternator

2. Run 1/0 Gauge Ground from (-) of Alternator to Frame (Leave factory wire connected) and to (-) of Factory Battery

3. Run 1/0 Gauge Power from (+) of Alternator to (+) of Factory Battery (fused @ 320A)

4. Run 1/0 Gauge Power from (-) of Factory Battery to (-) of Second Battery and to Body Ground

5. Run 1/0 Gauge Power from (+) of Factory Battery (fused @ 320A) to (+) of Second Battery (fused @ 320A)

6. From there all Power needed for AUX Equipment (Amps, Rock Lights, Inverters, etc) will Run from the (+) of the Second Battery (Fused appropriately)

 

I did a lot of research into this and the only things that had any second thoughts on were if I should run a relay or not and if i should run the 1/0 gauge wire through the current sensor. (not sure if it would even fit).

 

I decided not to do either.

 

The first of which I chose not to do, mainly for the fact that the relay has a voltage drop of its own (minor), but also, it's removal has been the fix for many people in car audio  to reduce lights from flickering.  The amount of battery capacity that I have won't have issues with me needing to isolate my batteries.

 

The second of which I chose not to do, was only because I read a lot of posts (mainly in car audio forums) that didn't do this and had no issues.  I feel that the current wire that is running through the sensor must suffice.  I'm still a bit on the fence on this one.  But, I could only find maybe 1 or 2 instances where people did this modification and it was for much smaller rated systems. Neither seemed to have any problems. I just tend to follow the majority of examples that don't have issues.

 

I'm attaching my general wire layout. If anyone sees something or could have a rational discussion, please do. I'm all ears.

 

 

 

 

[h1000101b]

I'm not sure if I posted this in the correct location?

[Mikeyblackout]

I'm struggling trying to figure out what to do in the same situation, dual batteries and 1/0 gauge while running everything through that hall sensor for the regulated alternator output. How did you end up hooking it up?

[Jessica Bombshell 89]

I could use some help from anyone that knows what to do... please.... I think it was last spring break that my battery got exposed to water from the spare tire reservoir in the truck I have a multi battery system in my vehicle I'm not sure exactly how many batteries there are but I do know of three so far there is a main battery auxiliary battery and an engine fuse block battery underneath that as well so I have no dash lights on in my car right now so I plugged in a diagnostic tester and it said change battery print sensors so I did that I sound like okay maybe my dash lights will come back on it didn't do anything did I still put a diagnostic test under the car and it still said lost control lost communication with battery current sensor module so I'll go what the hell how do I fix that I just did I put a new module in it so put a new battery in the car won't start I've tried charging the main battery and it won't retain a a full charge of it will get charged but then it won't stay fully charged and the auxiliary battery I tried to connect the battery charger to that and there was no reading whatsoever that came off of the auxiliary battery so I'm assuming that it could be because of the cold weather outside or maybe the parasitic drain is the auxiliary battery I'm not too sure but also the delivery battery is half the size of my regular battery so how do I find the the part number or anything for the auxiliary battery and the wiring schematic I can't seem to find that either....any help please would be greatly appreciated...I love my car ...I usually maintain it quite well ...ever since this whole battery issue I haven't been able to keep up with the fixes...