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01-25-2014, 06:03 AM
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CC Member
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Join Date: Nov 2004
Location: Cambridge, England,
n/a
Cobra Make, Engine: 289 leafspring, r/p
Posts: 518
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Not Ranked
Wiring diagram with alternator
Tricky one.
Car is a 289, 5-bolt motor, going for the nearest to original I can get.
That said, I want to use an alternator, not a generator. I'm planning to fit an early Ford (1G casing?) alternator with an external regulator. But I want to keep the charge light on the dash and the ammeter. I can find wiring diagrams for Mustangs with either charge light OR ammeter, but not both.
US -market 289s had the Ford externally-regulated alternator and retained the charge light and the ammeter, so it must be possible. Does anyone have a wiring diagram for this? I have the 'shop manual' AC diagram, but that's for a generator.
I think this makes my desired setup the same as an original 427, but may be wrong. Is there a diagram for a 427 original-spec anywhere?
Thanks guys
Roger
Last edited by rsk289; 01-25-2014 at 06:18 AM..
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01-25-2014, 09:05 AM
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CC Member
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Join Date: Apr 2010
Location: Studio City,
CA
Cobra Make, Engine:
Posts: 109
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Not Ranked
Mk3 wiring diagram
Roger, Email me and I will scan the Mk3 wiring diagram and send it to you. AJ
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01-31-2014, 10:34 AM
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CC Member
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Join Date: Nov 2004
Location: Cambridge, England,
n/a
Cobra Make, Engine: 289 leafspring, r/p
Posts: 518
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Not Ranked
The wiring diagrams sent are really helpful.
But - can anyone tell me which regulator was used? All the Ford ones I can find have 4 connections. The one in the Mk3 wiring diagram has only 3. Can anyone help with this?
Thanks
Roger
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01-31-2014, 04:43 PM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
the "I" connection on the regulator isn't used with an ammeter.
__________________
Fred B
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01-31-2014, 04:53 PM
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CC Member
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Join Date: Nov 2004
Location: Cambridge, England,
n/a
Cobra Make, Engine: 289 leafspring, r/p
Posts: 518
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Not Ranked
Thanks FWB - I do have an ignition light in addition to an ammeter. I understood 'I' to be for the ignition light, but I guess it should wired as in the Mk3 diagram?
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01-31-2014, 05:01 PM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
couldn't comment on that one as i have never seen the need to have a light and an ammeter.....
__________________
Fred B
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01-31-2014, 05:04 PM
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CC Member
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Join Date: Nov 2004
Location: Cambridge, England,
n/a
Cobra Make, Engine: 289 leafspring, r/p
Posts: 518
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Not Ranked
Quote:
Originally Posted by FWB
couldn't comment on that one as i have never seen the need to have a light and an ammeter.....
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Yes, seems weird, but all street Cobras had both, as in the Mk3 wiring diagram with the Ford alternator and regulator. This is what has me confused. |
01-31-2014, 05:42 PM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
i have this diagram also...note this one shows a 3 wire VR but has a relay wired in too. the first one is the std ford regulator, this one is transistorized.
both come from a 1966 ford shop manual
__________________
Fred B
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01-31-2014, 05:59 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
ERA cars have both the ammeter and light. This thread: Check out of charging system has a copy of the abbreviated wiring diagram that includes both. It's not particularly difficult. |
01-31-2014, 06:57 PM
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CC Member
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Join Date: Apr 2010
Location: Studio City,
CA
Cobra Make, Engine:
Posts: 109
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Roger, You only use three terminals. The white wire connects to the S terminal (which operates the ignition warning light), brown/green wire connects to the F terminal, brown connects to the A terminal. I am assuming you have the standard Autolite alternator control box. Do not forget to connect a ground wire to the base of the control box and run it to the engine block. The control box is mounted on a fiberglass foot box which is terrible at conductivity! AJ
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