big 3/4

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Old 01-17-2008, 10:16 AM
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big 3/4

Could someone explain the big 3/4 upgrade I have read about?
 
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Old 01-17-2008, 10:55 AM
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Originally Posted by Doug05XLT
Could someone explain the big 3/4 upgrade I have read about?

Do a search on "Big 3". You will find step by step info on how to complete it. Some have even posted pictures of how its done.

Good luck,

Devildog101
 
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Old 01-17-2008, 11:05 AM
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couldn't search for it

Couldn't get anything to show on the search. Tried "Big 3" "big 4", Big three" & "big four". Each time it said try other terms
 
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Old 01-17-2008, 12:05 PM
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Originally Posted by Doug05XLT
Couldn't get anything to show on the search. Tried "Big 3" "big 4", Big three" & "big four". Each time it said try other terms
Here's a link:

http://www.the12volt.com/installbay/...TID=73496&PN=1
 
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Old 01-17-2008, 04:39 PM
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and here is a link to my photo gallery that has tons of pictures:

https://www.f150online.com/galleries...cfm?gnum=10819

The Big 4 are
1. 1/0 G from the battery to the alternator (in parallel with the OEM wires) with a 300amp in-line fuse (don't forget this!).
2. 1/0 G from the Battery to the frame.
3. 1/0 G from the engine block to the frame
4. 1/0 G from the Battery to the chassis
 



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