Solar Panels Help

[the evil twin]

I've got the redarc sbi12 isolator so it should keep my starter battery all good. So if I get a 100 watt panel and a regulator between that and my aux battery it should keep it charged enough to run the fridge. Cheers for the help guys

If you have an SBI12 then I would def connect to the Aux when camped up.
Be aware that if the Alt has been running and the SBI12 is energised when you connect the Panel then the Panel will usually hold the Isolater energised.
No biggee it just means both batteries will be getting current flow so the Aux won't get all the juice.
They should both be in a high state of charge anyway.
Once the SBI12 deenergises it won't switch back in until you have Alternator or Panel Voltage on the Cranker so the Aux gets all the juice from that point on.

A 100 watts (most get 2 x 50's that fold) setup correctly will be heaps more than you need for your Waeco
Depending on the quality of the Reg the ideal setup is to run the Waeco off the 'load' terminals.
Again, not a biggee, just means the fridge compressor cycling doesn't confuse the Reg.

Those little power meters like TD posted are very handy and cheap at around 15 bucks on Ebay

'Normal' Panels give me the shits, big heavy mongrels of things so I use these.
Expensive but if you shop around or wait for a deal they are def better for storage etc
http://www.ebay.com.au/itm/100W-Fold...MAAOxykmZTMh~D