Author Topic: 1970 428 scj alternator wiring  (Read 6546 times)

Offline rayms69

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1970 428 scj alternator wiring
« on: April 17, 2012, 10:38:13 PM »
 Anyone got pics of the alternator wiring, how it is held in place on the shock towers. I have a metal loom bracket with no screw. I assume its a screw to shock tower. have searched everywhere with no luck
10-26-1969 Dearborn 428 SCJ auto

Offline J_Speegle

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Re: 1970 428 scj alternator wiring
« Reply #1 on: April 18, 2012, 08:40:49 PM »
When and where was the car assembled ?
Jeff Speegle

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Offline rayms69

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Re: 1970 428 scj alternator wiring
« Reply #2 on: April 19, 2012, 10:50:44 PM »
Hey Jeff thanks for replying, VIN#0F05R116586 Dearborn 10/20/69
10-26-1969 Dearborn 428 SCJ auto

Offline J_Speegle

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Re: 1970 428 scj alternator wiring
« Reply #3 on: April 23, 2012, 06:28:34 PM »
Checked through all my pictures and there is not one clear shot (snorkel, S tube, voltage regulator + in the way) of that area and routing. Would suggest you ask over on the 428 CJ site and or check the Ford Assembly manual for 70 Mustang (electrical one)
Jeff Speegle

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Offline Cobrajet428

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Re: 1970 428 scj alternator wiring
« Reply #4 on: April 24, 2012, 03:41:36 PM »
rayms69 -  I was putting this part back together when you first posted. If you're still trying to put that car together without the Osborn/Ford Assembly Manual, you'll save yourself one heck of lot of pain and trouble by picking up a set right away. This section is fairly well illustrated in the electrical manual. Here's a couple of photos that should help for now. As far as I know from checking against the manual, this is correct. My car is a 428CJ 4spd Mach 1 built October '69 Dearborn.

The first photo shows the detail around the regulator and shows more of the wiring harness that connects to the alternator. This harness is held by plastic loop clips to the underside of the shock tower braces (unless you have A/C which I believe uses bands). From there, the harness is attached to the shock tower by two small plastic loops. The harness wiring splits to go up to the solenoid (3 wires, black, brown, red/white) and down to the blue alternator connector.

The second photo shows better as the wiring goes down/up to/from the alternator. There are two large plastic ring clips, I think the same as those under the shock tower brace (check the manual, going from memory). These clips attach to the RH inner fender. The lower ring clip is holding the alternator, regulator, ground, and starter cables. (If it looks a little "open" it's because the retaining tab cracked as I was putting cables into it - it's an original one and it's time for a replacement. )The upper ring clip is holding the alternator, regulator, and starter cables.

FYI, our cars use a different (lighter gauge) battery cable set from that used a little later in '70. This is the correct set - Marti has them.
« Last Edit: April 24, 2012, 03:58:50 PM by Cobrajet428 »

Offline rayms69

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Re: 1970 428 scj alternator wiring
« Reply #5 on: April 24, 2012, 07:16:17 PM »
On the alternator, i had a wire holder on the wires and a loose nut. I placedthe metal wiring clip under this nut, looks like thats the way it should be. Those pics look like what i needed, on the frame below there are a couple more holes, looks like for wire holders from lighting.
10-26-1969 Dearborn 428 SCJ auto

Offline Cobrajet428

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Re: 1970 428 scj alternator wiring
« Reply #6 on: April 25, 2012, 01:20:08 AM »
It sounds like you're using the metal wiring clip on the back of the alternator right. My alternator is mounted right now so couldn't photograph that detail. Also, I'm not entirely convinced I've got the right alternator harness as there's two varieties being sold for 1970 cars. One has individual wires with insulators that push over the alternator terminals, the other has a molded plastic housing that largely covers/contains the wires which are then attached to the terminals with nuts. I've got the latter kind installed, but the manual shows something more akin to the former type for the 55 Amp alternator. Is yours original? What does it look like?

The first photo is the kind I've got installed. The second is the individual wire type also being sold for this application. I'm baffled as to how the connection to the regulator is made with that kind of harness.

As far as the holes on the frame area below, I'm not aware of any wiring that should go there. The lighting harness comes over from the opposite side of the car and then across the front frame rail.
« Last Edit: April 25, 2012, 01:22:55 AM by Cobrajet428 »

Offline rayms69

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Re: 1970 428 scj alternator wiring
« Reply #7 on: April 25, 2012, 03:36:53 PM »
Mine is original, has the dogbone, original wiring throughout.i was thinking passenger side side marker wiring would pass under the battery then through larger hole in inner fender
10-26-1969 Dearborn 428 SCJ auto

Offline krelboyne

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Re: 1970 428 scj alternator wiring
« Reply #8 on: April 26, 2012, 12:56:47 AM »
We sell the same dogbone style alternator harness for the 1970 cars with or without tachometer.

http://www.cougarpartscatalog.com/d0wy-14305-c-prem.html
http://www.cougarpartscatalog.com/d0zz-14305-c-prem.html

These and many others have been reproduced by a guy that collected NOS versions. Quality products at a very reasonable price compared to the past versions that always seem to have an extra wire or two.
Scott Behncke - Carcheaologist
West Coast Classic Cougars
503-463-1130
1968 GT/CS 302-4V San Jose 05B
1968 Cougar XR7 Dearborn 09A

Offline J_Speegle

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Re: 1970 428 scj alternator wiring
« Reply #9 on: April 26, 2012, 01:58:57 AM »
These and many others have been reproduced by a guy that collected NOS versions.
..........

Hope he always checks the NOS against original pieces - we know what the results of not checking. So many other reproduction pieces were made by only checking/using service replacement parts as a guide :(

Not specific to these pieces (general statement here) we should all compare any reproduction to original assembly pieces
Jeff Speegle

Anything worth doing is worth doing concours ;)

Offline krelboyne

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Re: 1970 428 scj alternator wiring
« Reply #10 on: April 26, 2012, 10:58:58 AM »
Hope he always checks the NOS against original pieces - we know what the results of not checking. So many other reproduction pieces were made by only checking/using service replacement parts as a guide :(

Not specific to these pieces (general statement here) we should all compare any reproduction to original assembly pieces

He actually used some originals and Ford electrical design prints (not sure where he got those though).
Scott Behncke - Carcheaologist
West Coast Classic Cougars
503-463-1130
1968 GT/CS 302-4V San Jose 05B
1968 Cougar XR7 Dearborn 09A

Offline SCJSTU

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Re: 1970 428 scj alternator wiring
« Reply #11 on: April 26, 2012, 11:16:57 AM »
Hope he always checks the NOS against original pieces - we know what the results of not checking. So many other reproduction pieces were made by only checking/using service replacement parts as a guide :(

Not specific to these pieces (general statement here) we should all compare any reproduction to original assembly pieces
LOL.....spot on Jeff.......I am also into 56 Ford F100 pickups.......a parts house went to the trouble years ago to reproduce the right side cowl panel.......used an 'original panel' for production mold....only problem........someone had added a side mount antenna at some point.......so the repop part had holes for the incorrect ant mount!!!!..........
1969 Shelby GT350 convertible  4spd-AC built 1-27-69
1967 Mustang S-Code 4-speed built Jan 1967 non therm
1956 Ford F100 Big Window 392 Hemi

1961 Falcon 2 Door Station Wagon 302V8
2004 Mach 1 Azure Blue

Offline Cobrajet428

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Re: 1970 428 scj alternator wiring
« Reply #12 on: April 26, 2012, 03:26:47 PM »
We sell the same dogbone style alternator harness for the 1970 cars with or without tachometer.

http://www.cougarpartscatalog.com/d0wy-14305-c-prem.html
http://www.cougarpartscatalog.com/d0zz-14305-c-prem.html

These and many others have been reproduced by a guy that collected NOS versions. Quality products at a very reasonable price compared to the past versions that always seem to have an extra wire or two.

(refer to photo in my previous post) I see the large red paper tag is "missing" from the short single pigtail wire on the repro you carry. Is that red tag not actually supposed to be there? I've always wondered about that and recently removed it from the harness I've got installed.

Offline rayms69

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Re: 1970 428 scj alternator wiring
« Reply #13 on: April 27, 2012, 12:14:08 AM »
Thats where that cable bolts to, the upper voltage regulator hole, you got a shot of your battery cables routing at the battery posts. I got the heavy duty wires from semo, I would have done it back in the day if it meant better starting, Im not to anal about repro stuff anyways. I got the amk kit for all wiring, only using what i need, this car had lots of its goodies in good shape. But im not to sure all amks are correct. I accidentally broke the fuel  line clip near sender at tank, ordered what they called for that spot, not the same, although it works ok.  Nice pics bro.
10-26-1969 Dearborn 428 SCJ auto

Offline specialed

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Re: 1970 428 scj alternator wiring
« Reply #14 on: April 28, 2012, 04:15:59 PM »
The red tag was used on early cars never 69 -70s