Battery Trunk Relocation

[Luillo69]

Well, the IC water pump is dead and I don't want to just replace it, I want to upgrade the system.
The plan is to add the following:

1. EMP Stewart pump with -20an fitting
2. J2 Fab S197 Bay IC tank
3. Fischer Motorsport Hot Water Mod
4. KB Bigun IC with big fitting single pass -20an or -16an
5. Fragola houses 1-1/4" Diameter

Now the issue is that I will need to hurry up and relocate my battery to the trunk. Below is a drawing with what i have in mind and i need help with the fuses and amperage. Please let me know if you see something out of normal or if any of the items I put together would not work. The only item i am not sure is the 300 amp fuse I have at the battery protecting the main run of 1/0 wire to the front of the car, i hope is not too big. Pretty much I have the following for the relocation:

1. Taylor battery case
2. 1/0 positive and negative wire
3. 300 amp ANL ceramic fuse at the positive battery
4. 300 amp positive distribution block at engine bay
   1. 4 gauge wire to starter
      1. 100 amp ceramic fuse
   2. 2 gauge wire to alternator
      1. 200 amp ceramic fuse
   3. 4 gauge wire to main fuse box

Again guys, any advice is welcome and thanks!!!!

 

[Willie]

My wife drives a 2004 T-Bird. The battery is in the trunk. I would say research this car to see how Ford did it and use the knowledge gained as a base for your design.

 

[Luillo69]

After searching better I think I will bump the 1/0 gauge positive and negative from the battery to the engine bay to 2/0 gauge and the alternator from 2 gauge to 1/0.

Now I need to verify if my fuses are adequate for the wire combos for the alternator and starter. I am using the same as it comes stock but because I am changing the wires to a much larger I need to verify if I need to also get higher amp fuses for the combo.


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[biminiLX]

This will be like any S197 rear battery relocation from what I can tell. I’ll ask my buddy who has done this on his ‘11 Coyote GT. Just wanted to help you broaden the search for info.
Good luck.
-J

 

[GNBRETT]

Make sure u use really heavy gauge wire for that trunk mount battery. Voltage issues otherwise. That was a little Gremlin I chased for a very long time. Just FYI.

 

[biminiLX]

Make sure u use really heavy gauge wire for that trunk mount battery. Voltage issues otherwise. That was a little Gremlin I chased for a very long time. Just FYI.

Correct. These cars are very sensitive to voltage in range.
-J

 

[Luillo69]

Make sure u use really heavy gauge wire for that trunk mount battery. Voltage issues otherwise. That was a little Gremlin I chased for a very long time. Just FYI.

The minimum gauge I’m using from battery to the front of the car is 1/0. I might go 2/0.


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[Vinnie_B]

This should serve as a guide. These wire sizes show max amp rating. You need to either add up your total amperage load for each circuit if you know and if not than just conduct an amperage test with an clamp on amp meter or Ford VCMM tool to determine amperage draw for safe fuse sizes.​

( Clamp on meter test)​

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Ampacities of insulated conductors​

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Wire Size​	60°C (140°F)​	75°C (167°F)​
AWG	(mm²)​	Copper​	Aluminum​	Copper​	Aluminum​

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14	(2.1)​	15​	-​	15​	-​
12	(3.3)​	20​	15​	20​	15​
10	(5.3)​	30​	25​	30​	25​
8	(8.4)​	40​	30​	50​	40​
6	(13.3)​	55​	40​	65​	50​
4	(21.2)​	70​	55​	85​	65​
3	(26.7)​	85​	65​	100​	75​
2	(33.6)​	95​	75​	115​	90​
1	(42.4)​	110​	85​	130​	100​
1/0	(53.5)​	-​	-​	150​	120​
2/0	(67.4)​	-​	-​	175​	135​
3/0	(85.0)​	-​	-​	200​	155​
4/0	(107.2)​	-​	-​	230​	180​