i tried looking it up but didnt get anywhere. ive seen other post on here about putting an alt off another vehicle and it being a direct fit and has the higher amps.

 

It's called a 3g swap. Lots of threads on this. You can Google it too.

 

thank you i found it now. i appreciate the help. dumb question i see what vehicles should have a 130 amp but how do i actually tell. does it say on them.

 

Mid '90's Ford/Mercury with large electric fans.
Taurus/Sable and Lincolns are favorites.

You want the 130A 3G alternator.
These will have a 148mm diameter and TWO holes between the three pairs of ribs on the front case.

 

The lower amperage has 4 smaller holes inside the blocks on the front..

 

The less powerful 95A 3G variant posted above is only 135mm in diameter.
Both pictured are 7" pivot mount.
There is also an 8 1/4" pivot and side mount styles available.

 

F.Y.I. On my 4.9 L , i put a Taurus Alt. on. It's a 115 A. Don't forget the inline fuse on charge wire.

 

I originally posted a pick of a low amp side mount, but decided I better change it to a pivot mount to avoid more confusion..

 

im going to the junk yard this friday to pick one of these 130 amp alts up. i wanted to remove my AIR pump and put the other alt there and run dual alts and dual batteries with an isolator. Any problems with running dual alts or dual batteries, id rather run dual alts if I can only do 1. (I have all kinds of aftermaket lights already on and move to put on and need more power)

 

Why dual alternators?
How many watts of lighting are on there???
(at 14V & 130A = 1820W)
You can take the 130A 3G and install a 200A rectifier, or just buy one set up like that.
Be warned you'll need a wider belt to drive them.

 

So the 3G alt will fit into the factory brackets on these trucks with no modifications?

 

Depends on the year and the engine.
85-93 Serpentine Windsors need the cast aluminum bracket relieved for the larger 148mm 130A unit.

Pic's here; http://oldfuelinjection.com/?p=75

 

115 is just the build # on the rear cap of the alternator.

Like posted above, 4 hole=95A ,2 hole=130A
If you ground the field of a 95A you might see 115... but it will melt down in short order.

 

lets see I got:
two of these (55w each)
Lights - 26 Series - All Season - KC HiLiTES ON-LINE STORE
and 2 more that look like this but arent KC they're blazer brand fog lights, not sure what wattage they are yet.

4 of these (100w each)
KC SlimLite: 100w Driving Light Black #1124

2 of these (130w each)
1634 - Daylighter: Drvg Blk 130w Single (ea)

2 of these (55w each)
KC Backup Lights: 2x6 55w Black Kit #517

2 of these (mine might be 24 volt, not sure)
http://www.northerntool.com/shop/tools/product_525434_525434?cm_mmc=Google-pla-_-Auto%20Accessories-_-Automotive%20Work%20Lights-_-16300&ci_sku=16300&ci_gpa=pla&ci_kw={keyword}

plus my regular truck lights and cab marker lights that are in my windshield visor. also I run my CB and radar detector (radar not offroad) all the time

the chances of all these lights being on at the same time, not very likely, infact will probably never happen for any practical use (maybe just a couple quick pics) but thats a total of 990w plus the two implement lights, the rest of the stock lights, stereo, CB, and other electrical uses

The most I will probably ever use at one time is the stock lights, the 130w driving lights(brush guard) and the 100w driving lights (light bar) and possibly the implement lights (on light bar but rear facing for cargo) so thats 660w without the stock lights, etc

I dont have anything but the light bar and cargo lights actually hooked up on and on the truck right now, but after this weekend, and upcoming week, might change that

 

what exactly is a rectifier and what does it do?

I found this on ebay, this what your talking about?

200amp Rectifier part # 95-0043, made by IR, new parts LOT OF 2 | eBay