Yeh GQtauto, Anderson good, have same in tow.
By the way jay see, I referred to Engel where yours is weaco, same principles apply.
Yeh GQtauto, Anderson good, have same in tow.
By the way jay see, I referred to Engel where yours is weaco, same principles apply.
2008 GU WAG ST Manual CRD - To do the job
jay see (17th November 2017)
No. I didn't get any wire just yet.
The dedicated plug at the moment is a merit plug, but I'm not using that one.
Yeah I think I will too, once it's all sorted.
I gather that.
When I say off the aux battery with a cig plug. This is what I mean.
Once it's all working properly I'll be using the 6mm2 wire with a twist and lock merit or an Anderson.
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12/97 GEE YOU
4.5lt Gas blower. Lots of mods to come.....all in good time.
I'm assuming your battery is in the back of the patrol, what size wire have you run to it?
2004 4.2TDi GU ST Ute, 3" Exhaust, UHF, Lightforce Spotties, BFG All Terrains, Steel Winchbar, Winch, Dual Batts, CC Ultimate IC, 4" Snorkel, XLR8 Steps and Scrub bar
threedogs (18th November 2017)
I run my fridge off the aux in a very dark cargo area ,Its only for food and a six pack for the last day.
Have the esky dripping slowly into a billy as water to hotter than water. make a old radio up in a box to run off a battery box you can top up with some solar.
never ran out of battery power ever. dont use youe Fridge for drinks it will flatten in now time ,
If you camp near a town or caravan park take an esky for drinks, cold water to wash your face in the morning priceless
Mt aux battery is a 115ah wet cell Trojan. would love litium but they over a grand It can wait till the lotto win
edit I also use a digital temp controller best mod everIMO
Last edited by threedogs; 18th November 2017 at 09:04 AM.
04 ST 3lt auto, not enough Mods to keep me happy, but getting there
GQtdauto (18th November 2017)
Yeah lithium is good but the prices not so much .
OK. I think I may worked out what's going on.
Last week at around 7pm I loaded up the fridge. Plan was to fill it with water and beer, for the Sunday cricket games and leave it in there.
Sunday morning ready to go and my son goes out to start the car, he drives to the ground and we set ourselves up.
Fridge keeps going off.
I ask him last night. Did you do anything different last week before we drove to cricket? No, 10 minutes later, "oh wait the radio was on but it was muted and the screen was off."
The radio is connected to the aux battery and you need to turn it on and off everytime.
He was on the phone writing stuff down when I jumped out. He knows how to turn it off, but must've forgotten to.
So the radio was on for 15 hours with the fridge.
I plugged the fridge in last night straight into the battery box at around 6 and checked it just now 11.5v
The dedicated plug is only a short distance from the junction box may be a metre. Would the 6 mm2 still be recommended or would that be overkill for such a short distance.
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12/97 GEE YOU
4.5lt Gas blower. Lots of mods to come.....all in good time.
Where & when you do the voltage checking is important.
What you need to check is the voltage at the fridge when it is running. This probably involves having to rig up something to enable this.
Reason is to check the voltage drop between battery & fridge.
No good checking the voltage at each end of the cable when there is no load. Voltage drop increases with the current being drawn.
It can be a 'vicious circle'. Load increases when fridge cycles on, voltage drop increases, fridge compensates by drawing more current (amps) -> battery discharges quicker.
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Bidja (19th November 2017), the evil twin (19th November 2017)
Totally agree.......
jay see, As mentioned earlier on this thread:
Noted that your fridge cable run is less than 1m from battery box (in back of veh) and that your charging cables to the batery box "are as big as your thumb" !!!. Both cable runs are important in term of achieving a miniumal/acceptable voltage drop. Both have current flow that can be checked by measurement.Voltage drop is very important factor to consider and is best to keep the voltage drop below 3%. Can be calculated or measured for a given current flow.
EG: the fridge run: Hook up Volt meters, one at the battery and one at fridge. Get a multimeter that can measure current flow (not hard to get) and then you can measure the start up and run currents. Hence by taking the reading of both volt meters you can these see the votage drop at the given current flows.
2008 GU WAG ST Manual CRD - To do the job
the evil twin (19th November 2017)
Wot Cuppa & Bidja said X 2
I would also make sure you start off your testing with a fully charged Aux.
Use a Bench Charger to make sure.
The fridge being faulty can be ruled out 99% of the time and if the battery is good then it means you are looking for either poor charging to the Aux or high resistance/voltage drop in the leads
Some fridges are a PIA as the low voltage cut is too high from manufacture but it is what it is.
Last edited by the evil twin; 19th November 2017 at 12:51 PM.
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Bidja (19th November 2017)