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About to buy stuff for 3G alt swap, few questions

Old Dec 12, 2007 | 02:11 AM
  #1  
86 5.0L's Avatar
86 5.0L
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Default About to buy stuff for 3G alt swap, few questions

Getting ready to buy the necessary stuff for a 3G alt swap, wanted to make sure I understand this completely, first the parts

Alt
http://rjminjectiontech.com/?p=6

Harness
http://rjminjectiontech.com/?p=7

and on the Alt page it says I must upgrade the charge cable, should I? or am I fine with my current stock setup?

I have to purchase the pully seperately, whats best? if I can get the pully off a 94-95 Alt which size would that be? can I use the one from my old Alt?

any other little odds or tips I should know about?
Old Dec 12, 2007 | 02:27 AM
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Default RE: About to buy stuff for 3G alt swap, few questions

i took my old alt to napa and they pulled it off the old one and put it on the new one.
Old Dec 12, 2007 | 03:20 AM
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Default RE: About to buy stuff for 3G alt swap, few questions

first off the buy the alt from the parts store, second you dont need that harness, run a direct power from the solonoid or the battery to the back of the alt and do NOT connect the 2 orange and black wires to the alt. I used a 4 gauge on mine, and I also used an inline 150amp waffer fuse. You will also need to make a larger ground from the motor to the main ground behind the battery. Ive read you cant use your old pulley however I used mine and I havent had any issues
Old Dec 12, 2007 | 03:22 AM
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Default RE: About to buy stuff for 3G alt swap, few questions

http://forums.stangnet.com/showthread.php?t=646825

http://www.corral.net/tech/maintenance/130a-tech.html

https://mustangforums.com/m_1609872/tm.htm

http://www.mustangcentral.net/tech/alternator.html

http://www.mustang50magazine.com/how...tor/index.html
Old Dec 12, 2007 | 04:08 AM
  #5  
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Default RE: About to buy stuff for 3G alt swap, few questions

ORIGINAL: primetime5.0

first off the buy the alt from the parts store
,
any reason why?

ORIGINAL: primetime5.0
do NOT connect the 2 orange and black wires to the alt.
In the walkthrough here it says I should

Connect both blk/org wires AND the 4 gauge wire to the stud on the back of the alternator

Old Dec 12, 2007 | 05:30 AM
  #6  
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Default RE: About to buy stuff for 3G alt swap, few questions

so that you wont have to wait for it to be shipped, i know in the how-to's it says to, after some research on SN those wires arent meant to carry the new amp load, so its best to leave them disconnected or it might cause a fire. I personally dont have them connected and my alternator works great
Old Dec 12, 2007 | 08:21 AM
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Default RE: About to buy stuff for 3G alt swap, few questions

what do those two black/orange wires do? i connected them with no problems yet....
Old Dec 12, 2007 | 12:35 PM
  #8  
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Default RE: About to buy stuff for 3G alt swap, few questions

I run the Powermaster 140 AMP, use one wire that came with it straight to battery w inline fuse like primetime said, took electrical tape and covered stock plug pins and wrapped elec tape around that in case I need to use stock alt, the connections will be clean.
Old Dec 12, 2007 | 02:07 PM
  #9  
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Default RE: About to buy stuff for 3G alt swap, few questions

ORIGINAL: FivePointOhh

what do those two black/orange wires do? i connected them with no problems yet....
they are the power from the old wiring, like I said they arent meant to carry the amp load and could cause problems
Old Dec 12, 2007 | 02:10 PM
  #10  
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Default RE: About to buy stuff for 3G alt swap, few questions

When i did my install a couple weeks ago I had nothing but problems with the black orange wires installed. So i went crazy and ripped ALL the wires out including the headlight wires and everything. Come to find out...those two black/orange wires end up going together into one, which is the same gauge....then connect to a fusable link, then to an even smaller wire. WTF was ford thinking!? so I ripped all of those out, jumped the yellow/white? (i think) to the main power output of the alt. then ran a 4 gauge wire straight to the battery. At idle my car charges at 14.2 with all accecories on.

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