Battery connection

[Wheelz]

Hey guys

Need a favor please. Can someone with a 4.5 gen with dual alts take pics of the passenger side battery connections please? Connectons to the alt and anything it's connected to. Admin sent me a wire diagram already but i to see it realtime.
I have a electrical gremlin after my 2G turbo swap and battery relocation. My battery light comes on randomly at 14v but goes away after a restart. Connections are all tight, batteries replaced, ibs replaced, fuses and grounds are good. But I don't see a crossover cable between batteries and think that maybe the problem? I didn't do the relocation cause electrical is not my thing.

 

[H3LZSN1P3R]

Here you go

 

[Wheelz]

Many thanks! Looks like my buss bar was eliminated...not sure if that's a bad thing..I still have the grid relay inline and alt going to the new battery relocation for charging..but verified i am missing that crossover.
Anyone know if thst would cause the battery light to go off?
My handicap mods take quite a bit of power and are always on hot...not keyed power and seem to be pulling all power from the driver side battery.
Perhaps the IBS is sensing too much of a draw since no crossover?

 

[H3LZSN1P3R]

Absolutely want the crossover cable

 

[Wheelz]

do you know the sizes of those 2 mega fuses? From that picture, I assuming the red shrink tube one is the cross-over, the 2 others, (Alt and the grid relay)? I cant find my old buss-bar and dont know why he removed it...btw, pressure wash that bay

 

[Brutal_HO]

You didn't tell me you had replaced the IBS. The IBS will not light the battery light. A defective IBS will set an IBS specific DTC.

Did you follow the calibration in one of these doc?:

https://static.nhtsa.gov/odi/tsbs/2023/MC-10247948-9999.pdf

https://kb.fcawitech.com/assets/S1408000384_IBS_Blind_Charging_Stop_Start_SOL.pdf

Ram TSB S1408000384 — 2023 5500 | CarComplaints.com

Ram TSB S1408000384: Technical Service Bulletin for the 2023 Ram 5500.

www.carcomplaints.com

The removal of that crossover has pooched your dual alt setup and rendered it 2 singles, and I expect the IBS isn't seeing the charge rate the BCM is telling it to expect.

You should bitch slap your installer.

 

[Wheelz]

Ah..nice..I didn't get specific DTC codes as mentioned in that document. The battery light is totally random. I can see the charge kick on up to 14.2..then just jump all over the place...13.2 upto 14.2..but setoff totally random. As I dug deeper into it. Noticed there was only one cable from the alternator straight to the relocation. Hah. My installer was a friend who only works on gassers and not diesels...fool didn't tell me he left off the crossover.

I didn't know about calibration of the new IBS. But there was enough "sleep time" for the 8 hour cycle it needed from the document...so no DTC's. ..yet.....now just got to make a 1/0 crossover cable now and see if it clears it up..
The max charge i would see on the batteries after a cycle. (Truck off) is 12.7v...and figured it wasn't charging enough.