Auxillary Battery in a Pajero

[Capnbazza]

I know this subject has been done to death but I need some  information on putting in a Auxillary battery to mainly run a 60l Engel while driving and camped up for a day or so..
1. How hard is a DIY setup to connect up a aux battery.?
2. Is there a specific isolator that won't cost the earth to put in.
3. Been told 6B&S cable is a must.
4. Can I get away with a sealed wet cell battery or again one that won't cost the earth but will also give good service.
5. I currently have a 6mm wiring set up with Anderson plug to the back of the tug to run a caravan (done by  the dealer) battery and it will also be running a 80amp calcium marine battery that is being installed in a new camper trailer. Will this effect how the Aux battery runs in the car. I should mention that the current cable doesn't have any isolator on it.
6. is it possible to run the caravan/camper wiring thru theaux battery isolator?

Trust someone can answer the above.

Must mention that I am prepared to tackle most things with a little knowledge but leave the big stuff to those who  know all.

cheers

Capnbazza

[Symon]

1. How hard is a DIY setup to connect up a aux battery.? Pretty easy
2. Is there a specific isolator that won't cost the earth to put in. Shop around, most would be around $100 mark
3. Been told 6B&S cable is a must. Yep
4. Can I get away with a sealed wet cell battery or again one that won't cost the earth but will also give good service. wet cell's aren't really sealed, but anyway yes you can use them
5. I currently have a 6mm wiring set up with Anderson plug to the back of the tug to run a caravan (done by  the dealer) battery and it will also be running a 80amp calcium marine battery that is being installed in a new camper trailer. Will this effect how the Aux battery runs in the car. I should mention that the current cable doesn't have any isolator on it. Yes it will affect it, basically that cable is too small
6. is it possible to run the caravan/camper wiring thru theaux battery isolator?That is the most common way of doing it

[Estelle]

Hey Capt'n ,

I don't think you need 6B&S under the bonnet to your Aux battery in the Paj. The distance between the batteries is not far enough to worry about using 6B&S. But there is no reason not to use 6B&S.

The cable size to your Anderson connector at the rear end needs to be bigger than the 6mm installed because of the distance and current draw - due to voltage losses. No probs with 6B&S here. It will depend on the current draw in the CT or CVan, but to be safe, go 6B&S even though you can use slightly smaller cable size (not really worth it. I couldn't run decent size cable inside the Paj to the rear - needs to be under the body and kept away from hot spots and protected by flexible conduit).

[SteveandViv]

Same in our paj. 

[achjimmy]

I got twin runs of 6b&s down the back and to the towbar by going through the firewall and inside. It is doable on the NS/NT series.