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Old 10-19-2013, 03:32 AM
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Default How to run power wire under a vehicle?

So I ran into a problem today. I need to run my 1/0 power wire. Here's where it gets difficult: (For reference, I'm installing in a 99 mitsubishi eclipse GS.)

When I look around the engine bay for somewhere to run the wire through, I almost immediately noticed that there is no easily accessible (Read:No possible way) to run the wire through the firewall, without dismantling the vast majority of the top half of the motor and/or a crapload of the accessories. Since this is wildly impractical, I got to thinking back to some build logs I saw on here where people had run the power wire(s) underneath their vehicle. Of course I couldn't find those build logs


So my questions is, What do I need to do in order to safely run 1/0 wire from the front battery, under the car, to the trunk? What kind of precautions do I need to take to prevent it from being damaged by things like water, snow, gravel roads, etc? I'm sure more than a few people on here have done this, so hopefully someone can guide me in the right direction.
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Old 10-19-2013, 04:52 AM
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Well for starters...

I wouldn't recommend running the wire by itself under the vehicle. Use some sort of conduit to run the wire through. Flexible hose can work well. The main thing is keeping your wire not as exposed to the elements.

try not to have the wire/conduit be the lowest part of the body.. if you bottom out on something you are going to have a bad day.

Really just secure it very well and you should be good.
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Old 10-19-2013, 05:34 AM
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Quote:
Originally Posted by SINTORMAN View Post
Well for starters...

I wouldn't recommend running the wire by itself under the vehicle. Use some sort of conduit to run the wire through. Flexible hose can work well. The main thing is keeping your wire not as exposed to the elements.

try not to have the wire/conduit be the lowest part of the body.. if you bottom out on something you are going to have a bad day.

Really just secure it very well and you should be good.
This was kinda what I was thinking. Something to shield the wire from the elements.

Now what's a good type of hose that's flexible, resistant to all kinds of weather, long lasting, and can fit 1/0 wire inside it.....only thing that comes to mind is garden hose Not sure I'm that ghetto yet though.
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Old 10-19-2013, 05:42 AM
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Quote:
Originally Posted by jheist1991 View Post
This was kinda what I was thinking. Something to shield the wire from the elements.

Now what's a good type of hose that's flexible, resistant to all kinds of weather, long lasting, and can fit 1/0 wire inside it.....only thing that comes to mind is garden hose Not sure I'm that ghetto yet though.
could always rhino like the wire super thick or something like thisAqua 50" Spiral Hose Wrap Blue | eBay
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Old 10-19-2013, 05:47 AM
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I've ran wire under cars without any issues, just dirty wire coating
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Old 10-19-2013, 07:41 AM
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I use this http://www.wirecare.com/products.asp?prodline=f6n and ss wire ties
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Old 10-19-2013, 09:39 AM
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I've ran my welding cable under 3 different cars now with zero issues, besides dirt. I'm ghetto so I use a holesaw to drill a hole in the side of the spare tire well and use a 90* radiator hose to get my runs of wire into the trunk
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Old 10-19-2013, 10:05 AM
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Cheap waterhose and zip ties
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Old 10-19-2013, 10:27 AM
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Get some 1/2 inch screws and conduit clamps and just screw it to the floor board every 6-8 inches. Then cover in bed liner spray/ undercoating.
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Old 10-19-2013, 11:37 AM
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I have 1/0 ran under my Jeep for 12 years. No sheathing or conduit. If I wiped it off it still looks like new. I have had the Jeep in water up to the middle of the doors, been through snow and drove through the desert with no problems. It has never snagged on any branches or rocks. Don't know enough about your mitsu to say it could be done safely though. Mine is ran along the brake lines with zip ties then enters the interior through a grommet and silicone applied to the mating surfaces. I check every time I lube my u joints to see if zip ties have broke. But as said do not install as where it could be damaged in the event of bottoming out or where it could be pinched and or cut by sharp edges.
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