budhayes3

iTrader: (19)

There's been alot of threads about the "Big 3" upgrade lately, which is a mod that I'd eventually like to do, but unfortunately funds and time don't allow for it right now (and probably not for a while). I don't have alot of electronics that need the extra current, just e-fans and an Infinity Basslink. Anyway, here's my idea...

Seems like the weak link in the factory set up is the small B+ fusible link from the red junction block to the alternator. I was thinking that a cheap, safe, factory looking upgrade would be to get a second B+ wire, and just double up on that wire. I'd have twice as much wire to decrease resistance and increase current, and still have the fusible link protection. I could cover the wire either in black wire loom or some large heat shrink for the factory look.

It couldn't hurt right? Any opinions?

Oh yea, I already have a 145amp alt BTW...

Coban

iTrader: (14)

I would be cautious about it. I wouldn't think you would get the proper circuit protection with the 2 fuses in parallel.

thunder550

iTrader: (70)

2 fuses is parallel will require twice the amperage to blow.

Of course, I've been running 0 gauge from the alt directly to the battery with no fuse for over 2 years, so I'm not the one to be talking to about safety, lol.

truckmann

iTrader: (8)

I've been running 4ga from the alt to battery for several months now with no problems, but I just ordered an inline fuse to be on the safe side. One thing I would suggest is to also upgrade the ground wire. You can get a few feet of welding wire which shouldn't cost very much. Just suggesting because upgrading the power wire is really kind of pointless if the ground isn't adequate.

budhayes3

iTrader: (19)

Excellent input, good points to consider

MonteCarlo31

is this why at idle (stoplight) at night when I power up the widows and they hit the limit the lights dim even at 14.4 volts?

truckmann

iTrader: (8)

It probably won't solve that, but it should help some. I think the power window system is a poor design. Seems that most of these trucks use a ton of amps to operate the windows and they are plagued with relatively slow operation.

regency

iTrader: (15)

wouldnt having a fuse at all cause it to not be more than stock anyways.

truckmann

iTrader: (8)

Not sure I understand your question, but as I see it the goal isn't to be able to move more amps just to be able to supply the necessary amps more efficiently. So, a properly sized fuse is needed for safety to prevent damage to the system.

regency

iTrader: (15)

so on a 145 amp alt. you would need a 145 or 150 amp fuse