relocating battery

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92sho16

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Would 4 gauge wire be adquet enough to relocate the battery to the trunk or would 2 gauge be needed?
 

Off Road SHO

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Four would "probably" be okay, since you're not cranking for long periods, but I always over-build when dealing with high amperage, low voltage systems. I use 0 and 00 cable (get it from welding supply place) whenever my run is long also.

Tom
 

92sho16

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thank you for your quick responses. does anybody have an online source for wire? and should i run it like i would run wire for an amp or should i run it underneathe the car.
 

Off Road SHO

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Definitely on the outside of the cabin, in a flex conduit (1/2" blue Carlon from Home Depot) tucked up where it can't be snagged. You could cable tie it I guess but I prefer to use rubber insulated "P" clamps. And if you really want to do it right, put in a circuit breaker that you can reset from the outside of the trunk area. You can get that at an RV or motorhome supply place.

Tom
 

SHOZ123

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I used #2 THHN that is inside two layers of split loom conduit. Wire tie it to the underside of the car. The type of battery is just as important as the wire size. Do not use a normal car start battery and be sure to put a 250A fuse on the positive battery cable. Probably want to add a 14 ga ground back to the engine block too.
 

92sho16

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not use a normal battery? is this so you dont have to vent the trunk? i might just buy a hawker oddessy batery and keep it up front.
 

SHOZ123

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I originally had the humongous OEM Gen 3 Motorcraft battery when I moved it to the trunk. I now have the PC 625 Odyssey there. It is still nice to have it in the trunk because of the extra engine bay room.
 

Bizzy

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I've got a little to add to this thread in hopes of getting some good advice. My plans to move my battery to the trunk have been on hold for a little while jsut like my 3.2 swap has been waiting for all the other pieces to fall into place.

I plan on using welding wire to run from the trunk to the front of the car, and was thinking that I should prolly put one of those **** switches in the back of the car so that I can have the battery "legally" mounted in the trunk. One thing I was thinking about is what should I do about where the terminals were.

Can I run the battery leads directly to the starter and ground there next to the starter, then jsut run a single heavy Gauge wire to the fender and tie in the ground to the ECC and perhaps a few spots around the engine bay?
 

SHOZ123

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I connected my wire from the trunk to the OEM leads. This way it is reversible. I did take the battery post clamps off. I would not run a large ground wire back but maybe just a 14 ga or so.

Why I like and used THHN wire is because of it's stiffness. It is somewhat self supporting and can be bent to the position you want.
 

Off Road SHO

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You still need the heavy ground cable back to engine (for the starter to work), to the frame (for all the lights to work) etc., etc. If you use a heavy enough wire like AWG 1 or AWG 0 or AWG 00, it's just like the battery is in the original location, close to where the juice is needed.

Tom
 

SHOZ123

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Off Road SHO said:
You still need the heavy ground cable back to engine (for the starter to work), to the frame (for all the lights to work) etc., etc. If you use a heavy enough wire like AWG 1 or AWG 0 or AWG 00, it's just like the battery is in the original location, close to where the juice is needed.

Tom


I've had my battery in the trunk for four years with no ground wire going to the front.

#1 is more than you need and 0 awg is way over ****.
 

Slo-Sho

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May I ask why it is so imperative to run the cable outside the car?? I run 4 awg wire to my amp on the INSIDE of my car. What gives? :confused:
 

Dave Ladely

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DO NOT use solid wire in a car. Even in boats, they are sure to use stranded wire and warn against using solid wire. 4 gauge is not thick enough as 12v causes a relatively large voltage drop with resistance, and the currents are huge compared to a house due to the low voltage for the amount of watts. check it out with electronic math! 12 v is limiting!
Welding wire is good; I used Marine 0 wire. Since it is thick, pretty hard to run inside, I ran it outside the car, underneath, inside garden hose for protection, then used marine fittings through the metal. Used Marine breaker near the car battery, a deep discharge battery in the trunk, an Optima, and used sensitive, quality marine/aircraft DC breakers in a marine panel in the trunk for each amp. Very sanitary, very hi tech, very high quality.
 

Dave Ladely

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no camera, but the marine breakers and panels are readily available; I used ones similar to "Blue sea" brandFor the life of me, I cannot understand why car freaks are still using fuses when airplanes and even boats dont, except for economic reasons in small boats. I mean, so these people still use fuses in their home panels?? Are they sheep whose minds are so conditioned by ripoff manufactures who gold plate fuses as if a Flash Gordon rocket ship is as sophisticated as the one in 2001? Can't anyone think for themselves? Can't they analyze at all? By what logic are they being led?
Very strange.
I use a Xantrex volt, ammeter, much more accurate than auto stuff. :snicker:
 

Dave Ladely

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For keeping track of electrical system, will work fine in cars, much better than ordinary meters for evaluating charging system and battery condition:

These are voltmeter/ammeter combinations for DC which work well for cars; the Link 10 will fit in a 2 1/16" standard gauge panel.

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Diameter (face) 2.5" (63.5cm)
One year warranty
:huh:
 

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