power wire under car

would it be alright to run the power wire from the battery to the rear of my s10 blazer under the car? if so would it be best to run along the frame rails, or through small pvc pipe to protect it. i was thinking that would be easiest so the wire wouldnt have to go under the carpet. thanks for any advice. brent

Use the PVC pipe idea so the wire will be protected.

if you want to run it under the body, run it along the frame rails with some 1/2"cpvc piping, assuming your using 4ga wire.Quad L Handyman services

honestly id go through the firewall, you wont risk as much and its easier to work on... just my opinion---- 1996 Chevy S10 ----

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Going inside will probably be the safer idea, but sometimes it's not always the only choice. If I were to run wiring outside of the car I'd definately use welding wire (since it's basically designed for that, plus for me it's cheaper than fancy wire). And also check out the flexible conduit most home improvement stores have. It's a rubber/plastic kind of stuff and isn't too expensive.

Under the car would be my last option if I had absolutely no other choice. I thought of it when I had a tough time once, but somehow succeeded to find a spot to drill without piercing into any other wires or pipes etc (with a lot of trouble) to drill a hole in the firewall. Going under the car is not the safest idea since you get water, mud and all the elements not to mention stones etc might hit the wires. If you put it in real good PVC then you're better off than nothing, but not as good and safe as it would be if it were inside the vehicle. Anyways, you are the final judge.

Definitely run the power wire inside the vehicle through the fire wall. You won't have to worry about the elements like markcars said^.

Plus if it's only 4ga, it shouldn't be that bad to go through the firewall and under the side steps by the doors.  If you were doing 1/0 ga then I would recomend going under the car.  I'm running 2ga inside my car and I have had no problem.  I've even run 1/0ga through a car and not under, you just have to do some extra planning in running the wire.  Hope that helps...Sonic

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Have you looked at http://www.knukonceptz.com?  Aside from having ridiculous prices and high-end cables (I know I sound like a commercial, but believe me on this one), they sell flat cable as well.  I ran their 1/0 and 2 gauge flat through my car and you can't feel where I ran it.  Check it out.

Lightning makes flat power cable as wellKevin Gerry

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