Flex Conduit (Run Wires Under Your Car) - Realm of Excursion



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Old 03-07-2007   #1 (permalink)
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Default Flex Conduit (Run Wires Under Your Car)

as most some of you know, i will be running my power/ground runs under the car. to be certain it will be safe the elements, i'm going to use flex conduit which is very durable. i'm hoping to have some time this weekend to work on the mini, so i picked up the parts from the store today.

flex conduit


angled couples to feed the wires into/out of the trunk


here's 1/0 Wire fed through the coupler


coupler installed onto the conduit (it's screwed on which i found nice)


comparison of the 3/4" (internal diameter) conduit to stinger 1/0


for those who like to use flex conduit with a larger gauge, there are larger size conduits that will handle up to 4/0.

while browsing the section, i came across this coupler. it looked to be a decent alternative for a firewall groment. it's much cheap to the real thing; only $1.50 where i got mine. i might actually use these from now on...of course where appearance isn't important.
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Old 03-07-2007   #2 (permalink)
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how much did that cost you overall?
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Old 03-07-2007   #3 (permalink)
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for the 25' of conduit and the couplers, around $30. well worth it for the piece of mind.
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Old 03-07-2007   #4 (permalink)
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Where'd you get that conduit from?
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Old 03-07-2007   #5 (permalink)
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i got from osh since it was on my way home from work, but you can find it a home depot, lowes, and most any other major hardware store. it will be located in the electrical section with the rest of the conduit.
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Old 03-07-2007   #6 (permalink)
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Thanks Shon.
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Old 03-07-2007   #7 (permalink)
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im actually thinking about picking some of it up just for the same fact.

thanks shon
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Old 03-09-2007   #8 (permalink)
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well i got off from work early today so i decided to get a head start on the install of the conduit.

started by drilling the holes


attached coupler/mounts to the conduit than run them in place to be secured


i had to trim the couplers to clear the battery box and frame. it's a tight squeeze.



test fitting the runs to the front



this weekend i'll have to get some lube to help aid in the Wire pull.


...oh yeah, today when i pulled my battery out, i found a nice surprise as it's been covered the whole time.
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Old 03-09-2007   #9 (permalink)
 
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shon, just a tip for you..

dont buy lube.. !!

more than likely you already have the best thing to use, on hand.....

armor-all or any of the equivalent products out there...

works amazingly.. just spray a LOT in the opening of the conduit.. when you start feeding the Wire through, it will get coated nicely, and every now and then, give it another squirt.


when i ran those 20 runs through my firewall, i had a heck of a time.. then a teammate told me to squirt the hole with armor all. BAM, the wire slid through like i was doin a san fransico hooker on a friday night!

and, like i said, you probably already have armor all or something similar on hand..

the stuff i had was 2001 protectant or something like that, in the green bottle.

but, imo they are all the same, and will give the same result.
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Old 03-09-2007   #10 (permalink)
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looks very nice and safe!
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Old 03-09-2007   #11 (permalink)
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nice tip im gonna do that to my grounds, but through the floor lol
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Old 03-09-2007   #12 (permalink)
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I knew Deka made good batteries.. hmmm.
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Old 03-09-2007   #13 (permalink)
 
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Great Idea using the conduit to keep the wire safe. I never even thought of that. I'm writing that one down in my book of idea's that work and work good. How much is that stuff??
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Old 03-09-2007   #14 (permalink)
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i think im going to try that. i dont wanna rip out my interior, too much work. this looks like a big save of time and labor
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Old 03-09-2007   #15 (permalink)
 
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Me too, I want to run 1/0 to the trunk under the car in stead of cramming it under the carpet. I might even be too lazy to pull the old 4 ga. out lol. Conduit all the way!!!
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Old 03-09-2007   #16 (permalink)
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does anyone know if the conduit would be able to withstand high temps? like across a hot tailpipe/exhaust. i orignally ran some 4 ga under my car wrapped in the ribbed black plastic that comes with knukonceptz amp kits and the ehaust melted the wire, the plastic, and blew the fuse. not cool
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Old 03-09-2007   #17 (permalink)
 
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Quote:
Originally Posted by bball09124 View Post
does anyone know if the conduit would be able to withstand high temps? like across a hot tailpipe/exhaust. i orignally ran some 4 ga under my car wrapped in the ribbed black plastic that comes with knukonceptz amp kits and the ehaust melted the wire, the plastic, and blew the fuse. not cool
1.) why would you run wire that close to something hot? Im sure you could have routed it elsewhere.
2.) That mesh crap doesn't help much. Look into the Conduit or Split Loom Tubing.


Just don't run it close to the exhaust. It's simple
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Old 03-09-2007   #18 (permalink)
 
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lookin awesome shon
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Old 03-09-2007   #19 (permalink)
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Quote:
Originally Posted by pornstar View Post
shon, just a tip for you..

dont buy lube.. !!

more than likely you already have the best thing to use, on hand.....

armor-all or any of the equivalent products out there...
thanks for the tip but i actually didn't have anything equivalent on hand. either way, i had to make a run to hardware store for additional parts so i picked up some lube.

just to note, and i'm not sure if it's relevant, but armor-all and other finishing sprays are oil based with a silicone additive (unless stated). i'm not sure if it will affect the insulation/conduit as it may never fully dry, but some finishing sprays can cause damage to rubber, plastic, and etc. the lube i got is water based with wax to prevent any chemical damage to the insulation/conduit.
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Old 03-09-2007   #20 (permalink)
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Quote:
Originally Posted by Kay Ot Tek View Post
1.) why would you run wire that close to something hot? Im sure you could have routed it elsewhere.
2.) That mesh crap doesn't help much. Look into the Conduit or Split Loom Tubing.


Just don't run it close to the exhaust. It's simple
1. the battery is on the right side of the vehicle. for some reason, there is a big ass hole through the chasis (big enough to see the road below) that i had utilized to run the wire up into the cab. this hole happens to be on the left side of the vehicle, and the exhaust runs near the middle, so to get it from the battery to this hole, it had to be run across.
2. i learned that the mesh crap doesnt do anything, right after it melted along with the wire and i blew the fuse.

so does anyone know if this conduit would stand up to the extreme heat of the exhaust pipe? i can do without the criticism. if i should avoid running it across the exhaust at all costs, then i will drill a new hole on the other side of the vehicle. thanks.
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Old 03-09-2007   #21 (permalink)
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Quote:
Originally Posted by bball09124 View Post
does anyone know if the conduit would be able to withstand high temps? like across a hot tailpipe/exhaust. i orignally ran some 4 ga under my car wrapped in the ribbed black plastic that comes with knukonceptz amp kits and the ehaust melted the wire, the plastic, and blew the fuse. not cool
i believe the conduit i have is stable up to 180 degrees for a long term. however, i personally would avoid running any power runs over or near the exhaust.
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Old 03-09-2007   #22 (permalink)
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i believe the conduit i have is stable up to 180 degrees for a long term. however, i personally would avoid running any power runs over or near the exhaust.
ok, thanks, i guess i'll just add another hole. heh, hopefully that hyundai doesn't fall apart.
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Old 03-09-2007   #23 (permalink)
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you would be more at risk of an electrical fire than your car falling apart from another hole. also, be sure to use a gromment which go through your firewall.
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Old 03-09-2007   #24 (permalink)
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Old 03-11-2007   #25 (permalink)
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well i finished the conduit/big 3 project today to prepare the mini for a future system; as well to improve the general electical.

i started by finalizing all of the conduit runs. i trimmed any excess plumbers tape as well as added a outdoor foam padding between the tape and conduit to reduce excessive wear.



after the conduit was ran. it was time to lube and pull. this is the lube that i used. as mentioned early in this thread, it's a water-based solution with wax. it's designed to cause zero chemical reactions with the insulation of the wire or conduit.


after the pull wire wish was fished, it was secured simply with electrical tape to the 1/0.


starting from the back, i fed and added lube as the wire was pulled from the front


wired pulled leaving excess at the front



connections made via a 1/0 solder terminal and heat shrink.




connections at the rear
(for those ineterested, i'm using jl terminals. they are extremely nice and offer (3) 1/0 connections. i will be adding another power connection for the system in the future.)


overall, running the power/ground runs under the car is very good solution especially if it's not feasible for your vehicle. flex/watertight conduit is a great product to provide protection to your wire and i highly recommend it. it's very easy to work with and the results are very professional.
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