Hi,
Has anyone done the "Big 3 Upgrade"?
Is it worth it if running dual batteries ?
If so are there any good write ups on it for 2007-2011 JKU ? and any recommendations for kits to do this ?
Cheers
Still using your OEM alternator?
What kind of Stereo AMP needs this that you have?
Seems like a waste of money to me on a Jeep unless you're a STEREO nut.
Hi Pastor,
Yep stock alternator....not a stereo nut....just a nut !!
Only reason of thinking was due to extra electrics, fridge, winch, CB, lights etc so getting a cleaner power delivery from the alternator.
If not to worry then I wont !! :blush:
I have done the big 3 upgrade on mine using all 0 gauge wiring. It was fine before the upgrade and was running a constant 13.8v or so according to the aeroforce gauge. After completing the big 3 the jeep is staying right around 14.2v. It seems to have really evened out the operating voltage which is nice. If I have the stereo really cranked up it will only drop to 13.6 on really heavy bass hits and then bump up to 14.9-15v for a split second.
View attachment 102905
View attachment 102906
View attachment 102907
View attachment 102908
I am also running 2 JL Audio amps which are right around 1400 watts.