Just wondering what sort of wiring I should use to link the 2 batteries.. the plan is to have a D34 yellowtop in the rear, and a standard in the front (possibly a D34 in the front one day depending on the bank..)..
It will have a healthy audio system (couple of amps) wired onto the rear battery, plus the option of a fridge or something one day if I take it camping..
I currently have a roll of 4 gauge sitting here, but not sure if it is enough for the load from the alternator (keeping it charged/transferring charge from one to the other)..
If anyone can shed some light onto it it would be great (as to if I should just use the 4 gauge or upgrade to some bigger stuff)
How often will you be running the fridge? Just a single upgraded battery should be ok if your not camping for an entire weekend or something.
Why don't you use a 4WD type dual battery kit, them you get everything you need and you know it'll work. Projector & Red Arc both make good ones.
I would just try a better battery first and go from there. If it doesn't work out then by all means go dual battery. It can be a pain running cables etc for dual batteries.
Well in that case pick up a Redarc dual battery setup. Run at minimum 2 guage. Hardest part will be running the wire to the back. Don't think there's a hole big enough through the firewall.
That and the potential current draw. It's always better to go larger. I have seen 4 guage setups but I am more of the school of over do it rather then under when it comes to cables.
Dual Battery Systems and Alternator charging
See if that link helps.
At my work we use 2gauge on all dual battery systems under the bonnet with the redarc dual battery relay, what car is this going in? if its an auto you could easily run a pos and neg cable through the clutch grommet then you just have to get it under the door sills all the way to the back. And make sure you have a large circuit breaker or fuse on both batteries.
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