Dual Battery cable location ...

Submitted: Sunday, Jan 18, 2009 at 11:57
ThreadID: 65228 Views:2349 Replies:7 FollowUps:2
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Hi all you techies and elecies

I have run to lengths of reinforced garden hose from engine bay to rear of the Jeep - pretty sure I've missed sharp edges , heat (exhaust and engine ) and moving things .. I'm going to run pos and neg cables through them to my aux battery in the back ...

Have I done anything really stupid that I may not have known or realised ?

Once the cable is run through and hooked up and working I'll tie the hoses in place firmly with cableties ?

Any criticisms or words of wisdom please ...

I'm not intending to do any deep water crossings so water should not be a consideration ..


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Reply By: Mandrake - Sunday, Jan 18, 2009 at 11:58

Sunday, Jan 18, 2009 at 11:58
Ooops - dropped a "w" up there --- LOL - its two lengths of hose .

AnswerID: 344906

Reply By: Axel [ the real one ] - Sunday, Jan 18, 2009 at 12:33

Sunday, Jan 18, 2009 at 12:33
Each to their own ,methinks however that trying to pass a thick enough wire through a garden hose the length of a vehicle is a exercise in frustration , much easier to buy convoluted tubing designed for the purpose.
AnswerID: 344909

Reply By: Member - Mark G Gulmarrad - Sunday, Jan 18, 2009 at 12:34

Sunday, Jan 18, 2009 at 12:34

Sounds like ya did just fine.
AnswerID: 344910

Reply By: Member - Shane D (QLD) - Sunday, Jan 18, 2009 at 13:03

Sunday, Jan 18, 2009 at 13:03
I would have some sort of fuse/circiut breaker at BOTH ends of the cable in the unlikely event it does decide to short out.
AnswerID: 344915

Follow Up By: Mandrake - Sunday, Jan 18, 2009 at 13:43

Sunday, Jan 18, 2009 at 13:43
Should there be one between the starter battery and the relay as well ? Its not mentioned in the wiring diagram that came with my kit ...
FollowupID: 612895

Reply By: Crackles - Sunday, Jan 18, 2009 at 14:23

Sunday, Jan 18, 2009 at 14:23
Steve the important thing with any electrical installation under the car is avoiding pinch spots,(remember the body moves on the chassis) the heat off the exhaust, area's that could catch a stick & avoid tieing to brake or fuel lines. Water (& dust) is not normally an issue as long as the wires pass through the body in sealed grommets.
I have just run wires to the rear of my JK but have routed them inide the car to avoid the cables being caught or squashed. I used 35mm cu with the positive in corrugated conduit passing through the firewall then along the passenger side floor kick panels, inside gaurd then out through rubber grommets & into the battery box. A pair of fused 12mm cables then runs to an Anderson Plug at rear of car again in the split conduit.
Cheers Craig............
AnswerID: 344922

Reply By: Member - Norm C (QLD) - Sunday, Jan 18, 2009 at 15:00

Sunday, Jan 18, 2009 at 15:00
I always run my cables through the chassis. Not difficult. Just get one of the yellow 'tongues' that come in chipboard flooring sheets. They are stiff enough to be able to push through, but flexible enough to get around bends. Tape the cable to the end of the tongue and pull it through.

I use the split flexible tubing over the cable where it enters and exits the chassis, otherwise, the cables are just resting inside the chassis.

I have now done this on two vehicles and I believe the effort is worth while to ensure the cables can never be snagged on a branch or rock when off roading.

Steve, if you use the garden hose idea (should be good if you can get it right out of the way), I'd have thought it would be easier to get the cable through the hose before connecting it to the vehicle. Split tubing would be much easier to use though as you don't need to thread the cable through.

Norm C
AnswerID: 344930

Follow Up By: Member - Scrubcat (VIC) - Sunday, Jan 18, 2009 at 22:44

Sunday, Jan 18, 2009 at 22:44
Yep,as norm has said, through the chassis is the go, but I used the 12 mm black garden poly pipe starting reasonably high in the engine bay and ending under the rear bumper at the Anderson plug. Poly pipe is heaps tougher than split loom tube and easier to push through the chassis rail.
Thread a length of light gauge ( I used mig welding wire) wire through the poly pipe to use as a draw wire, don`t cabletie it until you have the cable through.
too easy.

I don`t know where i`m going but i`m enjoying the journey.

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FollowupID: 612985

Reply By: Cruiser Crazy - Sunday, Jan 18, 2009 at 21:38

Sunday, Jan 18, 2009 at 21:38
Put some of the soap you use for the dishes in your hose.
This makes it all a bit easier when you try to pull the cables through the hose.
I don't know how big your cables are, but if you have some space left, pull a small rope in together with your cables.
It sucks the moist that might enter, out of the hose.
Do leave a centimeter of 5 hanging outside the end.
AnswerID: 344985

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