Thread: under bonnet 2nd battery wiring question

Originally Posted by buzz66

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The cable should run the most practicle direct route to the back of the Alternator output.



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Please explain


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Gday All,Wonder what the safety reason is ? The battery is at the front of the car.I recon i've seen every battery set-up in our club-(25 cars) when I was looking at doing mine, and all bar a couple of cruisers they all had the cables running across in front of the Radiator.I ran mine across under the cover at the front of the engine bay and up under the ABS,has been there for about 100,000ks without a hitch.
Would think using the right size cable would be more important....
Cheers Ean

Originally Posted by Ean Austral

Gday All,Wonder what the safety reason is ? The battery is at the front of the car.I recon i've seen every battery set-up in our club-(25 cars) when I was looking at doing mine, and all bar a couple of cruisers they all had the cables running across in front of the Radiator.I ran mine across under the cover at the front of the engine bay and up under the ABS,has been there for about 100,000ks without a hitch.
Would think using the right size cable would be more important....
Cheers Ean

Exactly how mine is, 120,000ks + for mine.

Baz.

I ran mine across the top of the intercooler - heavy duty cable encased in spiral split tubing. I fitted a 100Amp resettable circuit breaker on top of the main battery to isolate the cable to the second battery. The Redarc isolator is on this cable near the second battery. (I figure that if the CB on top of the main trips the redarc will isolate the second battery after a short time when it sees 0 volts from the main.)
I have another 100Amp CB for the other end near the second battery but haven't fitted it yet, bit short on space to mount it easily and need to make up a bracket.


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