Hey Yall,
So im having issues with the connection between the primary and secondary batteries in my truck. Currently I am only running primary because my secondary is being over charged. There is a lot of oxidation on the terminals and the main cables get pretty hot and you can see they are burning a bit (wires turing a darker brown). My problem is I aint gonna buy these cables for 800 from mopar. Can I just replace em with 0 gauge copper?

 

yes

 

To answer your question....Yes you can. Mine are in of replacement as well and I'm heading to the local welding shop for my lengths of cable. Can be had cheaper from there. I'll be soldering ends on mine as I don't care for the exposed cable.....it welcomes corrosion....although, when you CAN see it you know it's there but when you CAN'T see it......now I question the fact of whether or not I want soldered ends?

 

I had to replace primary battery due to bad terminal in battery. Terminals were very badly corroded due to leaking acid. I used a stiff stainless brush to remove and clean battery end terminals. Then I used a little No-OX id A corrosion preventative on the terminals and battery ends. I have used this product before and am very pleased at it efficacy on preventing corrosion. Check your batteries to see if they are still sealed at the terminal. When you re-place the cable you can apply the No-OX to the cable and crimp terminals. Solder if needed. The No-OX will prevent cable from corroding down in side the insulation. Think I got it from e-bay. Used to get it from an electrical supply store- but they are out of business now.

 

It's probably just leaky battery. My OE batteries leaked for years around the terminals. Good coating of silicone around the terminal posts helped but did no cure it.
If they are the OE batteries in anything older than an 08 they're about done anyway.
Alternator can't overcharge just one battery. Probably dead cell in that one and its just boiling the battery.