Alternator question

[smdk2500]

The cheapo reman alt some one put on my truck crapped out on me tonight. I am thinking about installing a 140 amp alt. What size wire is suggested to upgrade the wire from the alt to the battery?. Im guessing I should make it atleast 8 gauge. Is this over kill or under kill?

 

[Gavin]

4 AWG is what I see in the "Big 3 Kits" for alternators up to 150 amps.

 

[kennythewelder]

AWG #2 is what I used form my big 3 upgrade, but I did a little more than 3, mine is 5 points all together, not just 3. I have a thread about it on here, some where.

 

[df2x4]

Personally if you're doing it, id go 0ga. Do it once, do it overkill.

 

[smdk2500]

What is the big 3 upgrade?

 

[RDF1]

What is the big 3 upgrade?

The 3 main wires in your electrical system.
Usually a larger wire from Alternator to battery. Larger wire from block to frame, and finally a larger wire from frame to body.


I mainly use 1/0 welding wire since I have a unlimited supply of short drops of it at the shop.

Sent from my SAMSUNG-SM-G870A using Tapatalk

 

[kennythewelder]

Like I said, I did a big 5 up grade. Mine has 4 negative wires and 1 positive with a fuse from the alt, back to the battery. Here are some videos, and pics of mine.

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[kennythewelder]

More pics of mine.

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I used #2 AWG welding lead wire.