Trunk mounted battery, what size positive wire? - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer Trunk mounted battery, what size positive wire?

Print Thread

Trunk mounted battery, what size positive wire? #1596464 03/22/14 01:45 AM 03/22/14 01:45 AM
Joined: Jun 2007 Posts: 1,182 clarks summit pa 73cuda340 OP super stock
73cuda340 OP super stock Joined: Jun 2007 Posts: 1,182 clarks summit pa	Im moving the battery to the trunk in my cuda and was considering getting 2/0 copper welding cable. Is this good enough; any suggestions? Thanks 1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip, (JA5) Silver Frost Metallic 1973 Challenger Rallye 340 1985 W150 Power Ram prospector 1986 Camaro IROC-Z 305 tpi

Re: Trunk mounted battery, what size positive wire? [Re: 73cuda340] #1596465 03/22/14 02:07 AM 03/22/14 02:07 AM
Joined: Jan 2003 Posts: 5,894 Florida Locomotion master
Locomotion master Joined: Jan 2003 Posts: 5,894 Florida	Battery cable, especially if you run it the length of the car, is one area where "bigger is better. Personally I've been using Accel's 1/0 Lightning Cable in my car and it has performed well. The system includes a 50 amp alternator, electric fan and water pump. I try to maintain good grounds front and back. The copper clad aluminum saves weight also. Accel Lightning Cable 1846 @ Summit

Re: Trunk mounted battery, what size positive wire? [Re: 73cuda340] #1596466 03/22/14 02:09 AM 03/22/14 02:09 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: was considering getting 2/0 copper welding cable. Is this good enough; any suggestions? Yes, Measure the exact lengths you need & have the welding supply shop crimp some terminal ends on at the time of purchase then solder the terminals also. Several ways to go but I k.i.s.s. run that cable directly from the batt to the starter (hot all the time/no furd trunk solenoid). Ammeter in series in between starter and starter relay. Connect alt to starter relay. Starter relay to fusible link to bulkhead to feed everything except starter like OE. appropriate gauge cables/wires live every 24 hour block of time like it's your last day on earth

Re: Trunk mounted battery, what size positive wire? [Re: RapidRobert] #1596467 03/22/14 12:42 PM 03/22/14 12:42 PM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	on my old 67 coronet I used 0/0 welding cable and soldered the ends on. For the LeMons car we are doing we used the same wire but the ends have nuts that crip it all together. [IMG]http://i66.tinypic.com/pui5j.jpg[/IMG] Coming soon!!!!

Re: Trunk mounted battery, what size positive wire? [Re: Mr.Yuck] #1596468 03/22/14 02:13 PM 03/22/14 02:13 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	I used 0000 cable myself, but it was more than over kill. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Trunk mounted battery, what size positive wire? [Re: Supercuda] #1596469 03/22/14 02:41 PM 03/22/14 02:41 PM
Joined: Apr 2005 Posts: 12,271 Overpriced Housing Central RobX4406 I Live Here
RobX4406 I Live Here Joined: Apr 2005 Posts: 12,271 Overpriced Housing Central	2/0 is decent sized and capable of the job. I usually run 2/0. If you are putting in a cut off switch, to make it NHRA legal, there are many ways to wire the set up, some MUCH safer than others.

Re: Trunk mounted battery, what size positive wire? [Re: RobX4406] #1596470 04/04/14 10:58 PM 04/04/14 10:58 PM
Joined: Jun 2007 Posts: 1,182 clarks summit pa 73cuda340 OP super stock
73cuda340 OP super stock Joined: Jun 2007 Posts: 1,182 clarks summit pa	I ended up getting the 2/0 welding cable. Is it best to run the positive from the battery to the starter or to the starter relay first? 1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip, (JA5) Silver Frost Metallic 1973 Challenger Rallye 340 1985 W150 Power Ram prospector 1986 Camaro IROC-Z 305 tpi

Re: Trunk mounted battery, what size positive wire? [Re: 73cuda340] #1596471 04/04/14 11:20 PM 04/04/14 11:20 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	To the starter. Technically it'd be the same if you went to the starter relay then down to the starter IF you used the same 2/0 gauge from the starter relay down to the starter BUT the addit'l several connections would be an opportunity for a voltage drop. But to k.i.s.s. the main high amperage needs TO power the starter so run it directly TO the starter. run the alt to the starter relay if you run an ammeter & put the ammeter in series in a 6 or 8ga wire from the starter to the starter relay which will let the ammeter register ALL current in/out of the battery except for when the starter is cranking just like OE. If no ammeter run the alt to the starter so the alt has a direct path to replenish the batt live every 24 hour block of time like it's your last day on earth

Re: Trunk mounted battery, what size positive wire? [Re: 73cuda340] #1596472 04/05/14 03:47 AM 04/05/14 03:47 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Quote: I ended up getting the 2/0 welding cable. Is it best to run the positive from the battery to the starter or to the starter relay first? Do you plan to run the cable in the car or underneath the car ? I have seen it both ways as I ran mine under the carpet but I did not want the battery cable hot all the time under my carpet so I mounted a Ford type starter solenoid in the trunk and run about a 12" cable from the battery to the solenoid and then run the other side to the starter. That way the cable under the carpet is only hot while cranking the eng. All you have to do at the starter is put a small jumper from the solenoid terminal to the starters battery stud where the cable goes. Then you have to run a smaller hot feed to the starter relay on the firewall where the car picks up its hot feed and you can fuse that wire as I use the big 70 amp type fuse on my hot feed and you can use 10 or 8 gauge for that. Ron

Re: Trunk mounted battery, what size positive wire? [Re: RapidRobert] #1596473 04/05/14 10:45 PM 04/05/14 10:45 PM
Joined: Jun 2007 Posts: 1,182 clarks summit pa 73cuda340 OP super stock
73cuda340 OP super stock Joined: Jun 2007 Posts: 1,182 clarks summit pa	Quote: To the starter. Technically it'd be the same if you went to the starter relay then down to the starter IF you used the same 2/0 gauge from the starter relay down to the starter BUT the addit'l several connections would be an opportunity for a voltage drop. But to k.i.s.s. the main high amperage needs TO power the starter so run it directly TO the starter. run the alt to the starter relay if you run an ammeter & put the ammeter in series in a 6 or 8ga wire from the starter to the starter relay which will let the ammeter register ALL current in/out of the battery except for when the starter is cranking just like OE. If no ammeter run the alt to the starter so the alt has a direct path to replenish the batt So if I run the wire directly to the battery, the only wire that I need to run to the starter relay is the smaller wire from the solenoid on the starter? I am still debating on whether to run it inside or underneath the car. 1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip, (JA5) Silver Frost Metallic 1973 Challenger Rallye 340 1985 W150 Power Ram prospector 1986 Camaro IROC-Z 305 tpi

Re: Trunk mounted battery, what size positive wire? [Re: 73cuda340] #1596474 04/05/14 11:05 PM 04/05/14 11:05 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: So if I run the wire directly to the battery, the only wire that I need to run to the starter relay is the smaller wire from the solenoid on the starter? I am still debating on whether to run it inside or underneath the car. You'd need to (1) run a 6 or 8 ga from the starter large terminal to the starter relay large terminal, this is what powers everything in the vehicle EXCEPT the starter large terminal main power. (2) Run the OE brown wire or its equivilant gauge of wire from the starter relay "sol" terminal down to the small solenoid terminal on the starter. Just me, the welding cable insulation is very thick & I secure it along it's length with Adel clamps & away from any sharp sheet metal edges (it ain't going anywhere). My purpose (in doing that) is to k.i.s.s. & eliminate the trunk solenoid & even with it (using a trunk solenoid) you have to run a hot wire up front all the time tho it would be WAY smaller (& likely you would fuse it up front) & I would never run a cable under the car, under the carpet yes live every 24 hour block of time like it's your last day on earth

Re: Trunk mounted battery, what size positive wire? [Re: 383man] #1596475 04/06/14 11:59 PM 04/06/14 11:59 PM
Joined: Jan 2003 Posts: 5,791 Hamilton, Ontario Canada Magnum master
Magnum master Joined: Jan 2003 Posts: 5,791 Hamilton, Ontario Canada	Quote: only hot while cranking the eng. This is the best way to do it. 69 Super Bee, 93 Mustang LX, 04 Allure Super

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1