CTEK D250S Dual

[the evil twin]

What amp auto reset should I use?

Something like this in the engine bay just off the starter battery yes?

What size and type of cable to i use from my starter battery to the circuit breaker and from the circuit breaker to the ctek?

thanks!

Strewth, that link is a 150 Amp C/B cobber.
That is miles to high a rating.

Your Ctek will only pull about 25 amps at the absolute most

CTEK recommend 10 to 12 gauge wire from the Cranker to the CTEK with a 30 amp fuse.
Again, 10 gauge wire from the CTEK to the Aux if you are within a metre and if you want to fuse that run, again a 30 Amp C/B or fuse.
These will be fine http://www.ebay.com.au/itm/GENUINE-N...item4acacd4076

For the ease of it all I would simply buy enough 10 gauge cable and 1 or 2 C/Bs or Fuses