I bought this one on E Bay $109.00 for the switch $52.90 for two 100AMP circuit breaker,s about $218.00 with a bit of wire and some terminals,I had the Battery and Battery cable.

Lance C

http://www.ebay.com.au/sch/i.html?_odkw=led+panel+lights+48&_from=R40&clk_rvr_id=452031254322&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H1.XRedarc+12v+dual+battery+system.TRS0&_nkw=Redarc+12v+dual+battery+system&_sacat=0

What I did was open another window & go to the required ebay page.

Then I highlighted the URL & copied it using ControlC

Next went back to the grey nomads post & used ControlV to paste it into my reply

Then highlighted the pasted address & selected Insert/edit link icon (-)  and again pasted in the URL (ControlV)

I'm sure that there are easier ways to do it, but this works for me.

Hope the link works too

Brenda and Alan wrote:

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Olley46 the circuit breaker for the rear battery should be as close to it as possible not up in the engine bay. It's job is to protect the cabling between the two batteries and the rear battery in the event of a short developing.

Alan

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 The second battery is not in the rear, it is not far from the circuit breaker, had to fit circuit breaker where there was room.

Lance C