Originally Posted by ChasA
I don't think you understand that you have 2 separate battery systems. One system is for your chassis ( that is the engine starter and headlights, etc). The second system is your coach (house) batteries. These are primarily for lights, etc inside the coach
Both systems are 12 volt, not 6 or 24. Chassis batteries are usually 12 batteries and often are paired in parallel with another battery of the same size and type.
Coach batteries can be 12 volt or six volt. If using six volt batteries, think of each of them as 1/2 of a single 12volt battery. Two six volt batteries wired in series makes one large 12 volt battery.
Next you need to determine which batteries are coach and which are chassis. Then troubleshoot the two systems separately. I would start with the chassis ( starter).
Do you have a volt meter?
I'll check back tomorrow to see if I can help you.
I fully and completely understand they are 2 separate systems. That is what is so confusing about this entire problem I'm having and probably why it is so difficult for anyone to help me so far.
Yes, they are 2 separate systems. But for some reason or another, my engine will not turn over unless the 2 12v aux batteries are wired into a series.
I have literally tried every way possible to wire it up to get a different result and the only results I get is if the 2 aux are wired - to + by one wire.
Running ONLY the chassis + to the + on the chassis battery and the - to a ground on the frame/chassis to the - on the battery, yields no results.
Running the chassis + to the + on the aux battery that has more cranking amps while the frame/chassis - ground is attached to the aux battery, yields no results.
Keeping the above and then wiring my aux batteries in parallel, yields no results.
Running all the respective + and - wires to a single battery, yields no results.
Doing the above with the batteries in parallel, yields no results.
Running all of the batteries in parallel together with the wires shown in the PDF sent to me, yields no results.
The only result I get that fires up my engine and the generator is if I take a cable or a jumper cable and use that in a series on the aux batteries and turn the key, fires up my engine. Then I promptly take off the jumper cable or the wire so that the battery system stays off of 24v and in 12v.
The new problem I discovered today is that while my engine is running, everything is still on 24v. That's with no wire or jumper cable attaching it into a series.
I have gone so far as removing the aux batteries from the hood compartment and putting them on my bed, going back outside and trying, singularly, each positive connection I seen and putting the positive leads, one at a time, to the + on the chassis battery while the chassis battery was grounded. I even moved the ground to a new location and I get absolutely nothing at all except the usual "clank" from the starter motor.
When my girlfriend returns home from work tonight I'm going to try that other suggestion a few posts ago. That so far, is the only thing I haven't tried doing yet.