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What was the midday temperature in Birdsville when you were there in September? Mild or hot?

Sorry to break the news to you, but you're doing everything right. :D

That's the reason for the longevity of the aux batteries. LEDs don't consume lot of power. If you try to run the fridge for four days without charging the batteries they won't last anywhere near four...

You have two auxiliary batteries.
What do you use the batteries for while sitting for four days.
Are the appliances 12V or are you using an inverter for all of them?

Another thing that just came to my mind regarding the pretty valid question from the Evil Twin above is that a dual battery system may also demand a higher amp alternator to charge both batteries in...

I would like to argue that it won't. After taking what it(winch) can from the alternator, it would switch to the battery and draw the amps from there.
Only scenario I can think of alternator charge...

You do. You're helping by writing whatever you think, whether it's a fact or conjecture.
I've been learning from everybody here, (including myself. :D )

May be not. Alternator doesn't produce anywhere near as much as amps a battery would in a given short time frame.
So, it's logical to say the most of the current the winch would use comes form the...

Yes, but for a good cause, I reckon. We've already dealt with the alternator cleaning techniques.
Lets keep it going at current direction.
We're learning a lot from the conversation here.

Yes, the OP(which is me) was asking about the best way to clean a gunk filled alternator interior. That's been sorted.
We took it on a different direction, but it's a very good discussion. Lets...

Yes, that's absolutely correct. But, when the winch does draw the highest possible amps from the alternator(in our case 100 ampish), then we can argue, a thicker, higher amp(100+ ampacity) wire may...

Yes, it's pretty valid question.
I thought we are upgrading the alternator to compensate for all the extra components+appliances we add to the vehicle electrical system, but didn't think we need a...

Yeah, but during winch installation, we would add thick high amp wire connection from winch to the battery, wouldn't we? If the engine is running while winching(which usually is the case), then the...

What would be pulling that maximum regulated amp out of the alternator? If not the battery, then it must be something else.
Blower fan, ECU, lights, etc etc combined?
Can all these...

Did you cut the sense wire, so there's no connection from sense wire to battery charge wire?

or did you just create a bypass?

If you cut the wire, make sure to insulate the open end of the cut...

The idea is that the factory way of joining the alternator B+ wire and sense wire just few centimeters from the alternator gives false reading to the regulator about the battery charge status. When...

Both are fused. The idea is that the factory way of joining the alternator B+ wire and sense wire just few centimeters from the alternator gives false reading to the regulator about the battery...

Ok, cool. Sounds like the mod is working, right?

Hi Rodney,
That was last year when the alternator charge wired deteriorated. Since the alt charge wire and the sense wire is joined near the alternator, it caused the alternator to put out 15+...

The fuse is necessary. Even though if the fuse blows the alternator can end up putting out 15V+ .

There's another thing we can do. That is to leave the sense wire & charge wire junction connection...

Yeah, of course. Lot of other factors go into the ampicity rating of the wire. I was shown a comparatively thin wire that could handle 100 amp or so, long time ago. I forgot what was it made of. In...

So, it's 16 square millimeters cross sectional area of the copper wire excluding insulation?

That comes to 4.5 mm diameter of the wire, excluding insulation.

That sounds ok. The wire that I'm...

Sure!
But, 10mm thick wire???!!!!!
Even 150 amp alternators tend not to use charge wires that thick.
High amp wires for sure, but least thickness is preferred.
Have a look at the thickness of the...

In mine, both are roughly the same size, I think that 'cos they join each other in the wire harness by few centimeters.

According to AWG chart, 6 AWG is 4.115mm diameter. But, that may be without...

Size of the original white sense wire is 4-5mm(diameter with insulation) or 6 AWG(american wire gauge), then it joins the battery wire only few centimeters from the alternator rear.
But, I was told...