Can anyone tell me ,what the numbers mean on the switch mean .I do know that when set on 2 as per foto it is to have the lights and water pump on ,if you turn it straight up or down ,it turns all 12v aplliances off . my question is what does the 1 do if you turn the switch over to the right .Has it anything to do with the fridge if you put it on 1 whilst driving along .
It also looks the same as ours NewAge. On ours there is also a diagram on the fuse board describing that switch.
1 is for van battery. 2 is for car battery when travelling. Hope this helps. Kezngaz.
They are not always wired that way around so just double check what works when all the connecting plugs to the tow vehicle are disconnected in each position. I've come across a few that connect the house battery to the 3 way fridge supply in position 1 and others in position 2. For some strange reason the wiring was intended to charge the house battery while the car powered the fridge, it didn't actually happen that way around and the house battery ended up powering the fridge so it actually requires the switch to be in the position that doesn't connect the fridge to the house battery supply side. The real fix is to disconnect the link wire between the house battery and the fridge supply cable at the back of the 3 way fridge and charge the house battery via a DC to DC charger with its own Anderson plug.
If you are lucky enough to have a Crusader with a 12v compressor fridge then you need the house battery to fridge cable connected at all times, if you do fit a DC to DC charger you need to disconnect the car supply cable that runs to the fridge.
The reason for this modification is to stop a daisy chain where the DC to DC charger lifts the house battery voltage higher than the car battery, the loop then feeds back into the DC to DC charger and melted wiring/fuse block is the end result.
T1 Terry
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