5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

3G upgrade on a 83 capri

Old 12-30-2009, 08:16 AM
  #1  
87FoxStang
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Default 3G upgrade on a 83 capri

Has anyone done this? I have done it on my 87 vert, but the wiring is a bit different on my 83. Any help would be great...

Jeremy
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Old 12-30-2009, 03:21 PM
  #2  
luckythirteen13
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im not familiar with capris but i can say that the "kit" i bought for my install basically was designed so you could put the 3g alt into any car. it was just a plug/harness that hooked into the startor connector and the other 3 or 4 pin connector, cant remember, and that was connected to a 12v switched source. then you just had to run a wire from the battery to the terminal on the back of the alt.

basically made the 3g a 2 wire hook up
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Old 12-30-2009, 06:01 PM
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mjr46
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you need to eliminate the external voltage regulator for one, mine was on the fenderwell on my 85, I went with a one wire powermaster self exciting alternator and it worked well
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Old 01-02-2010, 11:07 AM
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87FoxStang
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I already have the 3g alt and plug for it. I was just wondering how to use the factory reg harness to hook onto the 3g harness.

This is what I have figured out.
4AWG from B+ post on alt to Batt + side of solinoid.
"A" from reg to "A" on 3G
"S" & "F" wires from reg to "I" on 3G
Stator wire on on 3G to "S" on 3G

The 3 wires on the reg are A,S,F and on the 3G are A,S,I...
Is this correct??
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