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Old February 22nd, 2009, 02:09 PM   #1
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anyone have a wiring diagram for a 71 442?

I was going to get a manual but figured I'd see what happened here first.
Thanks for any help,
Dave
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Old February 23rd, 2009, 05:03 AM   #2
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Here is one for a '72. They will be very similar, if not alike.
Hope this helps until you find a service manual...
If you cannot read this one (CO shrunk it down) shoot me an email address and I can send the full sized one.
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File Type: jpg 72 wiring IMG_0632.jpg (108.2 KB, 1237 views)
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Old February 23rd, 2009, 06:21 AM   #3
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Originally Posted by Lady72nRob71 View Post
Here is one for a '72. They will be very similar, if not alike.
Hope this helps until you find a service manual...
If you cannot read this one (CO shrunk it down) shoot me an email address and I can send the full sized one.
That's a Cutlass diagram, isn't it? The 442 wiring diagram is a black & white one later in the CSM. The big difference is that the 442 would have had an internal regulator alternator for 1971.
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Old February 23rd, 2009, 09:37 AM   #4
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Originally Posted by joe_padavano View Post
That's a Cutlass diagram, isn't it? The 442 wiring diagram is a black & white one later in the CSM. The big difference is that the 442 would have had an internal regulator alternator for 1971.
This is a '72, Cutlass, 442, and F85 diagram (A-body). There is no B&W one later in the '72 manual. For '72, the only internal regs I saw was for the Toro.

So watch for these differences between the 71 and 72 diagrams.
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http://www.flickr.com/photos/robsalbum/sets/
Lady's interior makeover Rally Pac stuff
Front end job Underhood resto
1986 Cutlass Supreme Coupe - "Pristine"
1978 Ford Pinto (Old Faithful) a.k.a. "the Tramp" - in the family since new.
1997 Cadillac STS
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Old February 23rd, 2009, 10:20 AM   #5
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My fuse box was bad

My fuse box was deteriorated so I ended up with a 72 standard harness and there were several changes from my 71 with guages wiring.The guage plug in plastic pieces were wired different and I had to rewire a few things to still be able to use my outside harness. It took a little time but I got it done. I still need to know where to plug in a few things.
Thanks for the schematic,
Dave
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Old February 23rd, 2009, 10:37 AM   #6
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Originally Posted by MN71W30 View Post
My fuse box was deteriorated so I ended up with a 72 standard harness and there were several changes from my 71 with guages wiring.The guage plug in plastic pieces were wired different and I had to rewire a few things to still be able to use my outside harness. It took a little time but I got it done. I still need to know where to plug in a few things.
Thanks for the schematic,
Dave
Even in 72, there were differences between the gauges and idiot light wiring. The two are shown on the right edge of the schematic for 72.
-Rob
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1972 Cutlass Supreme Convertible- (442 clone) -"Lady" (My mistress...)
http://www.flickr.com/photos/robsalbum/sets/
Lady's interior makeover Rally Pac stuff
Front end job Underhood resto
1986 Cutlass Supreme Coupe - "Pristine"
1978 Ford Pinto (Old Faithful) a.k.a. "the Tramp" - in the family since new.
1997 Cadillac STS
1999 Harley-Davidson Sportster - "the Freedom Machine"
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Old January 15th, 2010, 09:50 AM   #7
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Quote:
Originally Posted by Lady72nRob71 View Post
Here is one for a '72. They will be very similar, if not alike.
Hope this helps until you find a service manual...
If you cannot read this one (CO shrunk it down) shoot me an email address and I can send the full sized one.
Do you still have a blowup of that wiring diagram and will it work with a 72 Toronado? Thanks.
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Old January 15th, 2010, 10:09 AM   #8
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Do you still have a blowup of that wiring diagram and will it work with a 72 Toronado? Thanks.
I have a blowup of the Toro diadram at the house - PM me your emaill address and I will send it to ya!
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1972 Cutlass Supreme Convertible- (442 clone) -"Lady" (My mistress...)
http://www.flickr.com/photos/robsalbum/sets/
Lady's interior makeover Rally Pac stuff
Front end job Underhood resto
1986 Cutlass Supreme Coupe - "Pristine"
1978 Ford Pinto (Old Faithful) a.k.a. "the Tramp" - in the family since new.
1997 Cadillac STS
1999 Harley-Davidson Sportster - "the Freedom Machine"
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Old January 15th, 2010, 10:13 AM   #9
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PM'd you.

Great car I just got but it's a wiring nightmare. :P
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Old February 12th, 2010, 12:45 PM   #10
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I went to AutoZone.com and made an account there to access their guides. I found a couple diagrams for my 71 Cutlass that came in pretty handy. You could give that a try if you want
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Old February 12th, 2010, 01:36 PM   #11
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Your question is basically the same as the one in this link: http://classicoldsmobile.com/forums/...-diagrams.html

Here's the diagram posted there: Click the image to open in full size.

If you copy it into "my pictures" on your PC you can resize it or print it
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Old February 18th, 2010, 02:12 AM   #12
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PM'd you.

Great car I just got but it's a wiring nightmare. :P
If worse comes to worst.

There's always an American Autowire kits you can buy and replace it with.
VERY VERY simple to install even for a beginner.

http://www.americanautowire.com/factoryfit.html
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Old May 4th, 2010, 08:05 AM   #13
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Thanks Rob for the diagram copy. It was a lot of help. So I thought I would share my solution. Fuel guage quit working. I thought there was a short causing it to read FULL all the time. Instead, the circuit was not finding a ground. It needs a ground to return the guage to the "E". The sending unit seaks ground through the resister built into sending unit. Pulled the unit, chk'd w/meter-OK. Cleaned the contact rail w/ carb cleaner & a wire brush, removed varnish- Now it works fine. Destroyed the fuel "strainer" but still available through OER. 3/8". Part# K405. Pull strainer off of P/U pipe. Bottom of unit & wrap shield come right off. Thanks Again!!!!
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Old May 4th, 2010, 09:26 AM   #14
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Thanks Rob for the diagram copy. It was a lot of help. Thanks Again!!!!
No problem - glad you got it fixed!
Welcome to the site, too - introduce yourself and your car(s) when you get a chance!
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1972 Cutlass Supreme Convertible- (442 clone) -"Lady" (My mistress...)
http://www.flickr.com/photos/robsalbum/sets/
Lady's interior makeover Rally Pac stuff
Front end job Underhood resto
1986 Cutlass Supreme Coupe - "Pristine"
1978 Ford Pinto (Old Faithful) a.k.a. "the Tramp" - in the family since new.
1997 Cadillac STS
1999 Harley-Davidson Sportster - "the Freedom Machine"
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Old May 5th, 2010, 09:50 AM   #15
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My fuel gauge is going haywire again. Think my wire patch was too weak.
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Old November 19th, 2010, 04:57 PM   #16
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I am getting to rewire my 72 cutlass, could you email me a larger pic of the diagram? My email is irdbosn@swbelll.net
Thanks,
Vincenet
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Old September 3rd, 2015, 06:35 PM   #17
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72 A Body wiring harness

Hello,
I got a '72 parts car (350 automatic w/ AC) to finish up my 71 Cutlass S project (455 automatic w/ AC) and ended up using the '72 wiring. The '72 harness is definitely different and is very good except for cutting into the engine wiring harness so an HEI distributor could be used.
The '71 I'm trying to finish does not use an HEI, but does have a Pertronix unit installed inside the distributor.
I was wondering if you could help me out with a picture of the engine compartment wiring diagram w/o rally gauges.
I want to repair the cut wire and connect it properly, but need a diagram to determine where it gets connected.
I appreciate any help you could give.
Thank you for your time!
Brad
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Old September 3rd, 2015, 07:33 PM   #18
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Does it have the resistance wire in the harness or has that been removed and replaced?
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Old September 4th, 2015, 06:39 AM   #19
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Quote:
Originally Posted by bwayco View Post
Hello,
I got a '72 parts car (350 automatic w/ AC) to finish up my 71 Cutlass S project (455 automatic w/ AC) and ended up using the '72 wiring. The '72 harness is definitely different and is very good except for cutting into the engine wiring harness so an HEI distributor could be used.
The '71 I'm trying to finish does not use an HEI, but does have a Pertronix unit installed inside the distributor.
I was wondering if you could help me out with a picture of the engine compartment wiring diagram w/o rally gauges.
I want to repair the cut wire and connect it properly, but need a diagram to determine where it gets connected.
I appreciate any help you could give.
Thank you for your time!
Brad
If you are interested, I have both a 71 & 72 Chassis Manual for sale..... $65 each or $110 for both... Plus shipping costs.... PM for more details.....
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Old September 4th, 2015, 07:27 AM   #20
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Does anyone have 1972 Olds A Body engine wiring harness?

Thanks for the offer CRUZN66, but I was just hoping to get a single picture of the non-rally-pac engine wiring harness so I can put the '72 back to original.
Do you know what wire one would tap into if they were to install an HEI distributor?
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Old September 4th, 2015, 12:42 PM   #21
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isnt it posted right up above in this thread ?
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Old September 5th, 2015, 09:42 AM   #22
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Need 1972 engine compartment wiring diagram.

Sorry for the confusion.
All I want to do is reconnect the wiring back to the stock location after the black wire (which has ''resistance - do no cut' embedded into the wiring insulation) was rerouted to an HEI distributor.
Anyone know where this bulkhead wire goes originally?
Thanks!!
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Old September 5th, 2015, 12:38 PM   #23
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Resistance wire?

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Does it have the resistance wire in the harness or has that been removed and replaced?

Sorry for not understanding your earlier reply, but, YES, it has the resistance wire ('RESISTANCE DO NOT CUT' on the wire insulation), which is the one that was tapped into.
Knowing that, do you know where I should reconnect?
Thanks!!
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Old September 5th, 2015, 01:29 PM   #24
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This is from a 70, but the bulk of it should be the same.

Click the image to open in full size.
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Old August 21st, 2016, 02:21 PM   #25
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This is from a 70, but the bulk of it should be the same.

Click the image to open in full size.
I need that picture full size sent to my email address for my 1970 Cutlass Supreme. Inbox me please for email address
Click the image to open in full size.
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Old Yesterday, 12:25 PM   #26
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Can you download the picture from my photobucket account?

http://i90.photobucket.com/albums/k2...1.jpg~original
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Old Yesterday, 02:14 PM   #27
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Can you download the picture from my photobucket account?

http://i90.photobucket.com/albums/k2...1.jpg~original
It works but some of the stuff in the top picture is cut off and I need to know what it says because I am having troubles with making my car start from the ignition key. I am getting no power to my fuse but I have it everywhere else in the fuse box. Thought it might be the power coming into the fuse box feeding the fuse for ignition, whether than it being in the mechanical switch. I'm not a pro and I haven't had time to seat down and follow out the wires yet. I am guessing the blue box on top of my steering column is the mechanical switch where I see the red wire going into it and Violet color coming back out to feed the starter?
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Old Yesterday, 03:12 PM   #28
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It works but some of the stuff in the top picture is cut off and I need to know what it says because I am having troubles with making my car start from the ignition key. I am getting no power to my fuse but I have it everywhere else in the fuse box. Thought it might be the power coming into the fuse box feeding the fuse for ignition, whether than it being in the mechanical switch. I'm not a pro and I haven't had time to seat down and follow out the wires yet. I am guessing the blue box on top of my steering column is the mechanical switch where I see the red wire going into it and Violet color coming back out to feed the starter?
OK let me get a better picture of it then because even the one I took with my phone looks just like this one.
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Old Yesterday, 04:36 PM   #29
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Click the image to open in full size.
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Originally Posted by Letsrunum View Post
It works but some of the stuff in the top picture is cut off and I need to know what it says because I am having troubles with making my car start from the ignition key. I am getting no power to my fuse but I have it everywhere else in the fuse box. Thought it might be the power coming into the fuse box feeding the fuse for ignition, whether than it being in the mechanical switch. I'm not a pro and I haven't had time to seat down and follow out the wires yet. I am guessing the blue box on top of my steering column is the mechanical switch where I see the red wire going into it and Violet color coming back out to feed the starter?
That was instrument lights where I thought it said ign..lol. I could check the plug going into the blue box for power coming in on the red wire, then plug it back in and turn the key over to "Run position" so I can check the power coming out on the violet wire of what I think is the mechanical switch(blue box)?
Click the image to open in full size.


Click the image to open in full size.

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Old Yesterday, 07:13 PM   #30
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The pink wire off the column connector is for the ignition. Check to see if your bulkhead connectors are tightly secured under the master cylinder. Here is a link to a Chevelle schematic, it should be close.
https://s3.amazonaws.com/ClubExpress...xAGX0Vwapfs%3D
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Old Today, 12:31 AM   #31
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I sent him better pics of the Olds schematic.

Click the image to open in full size.

Click the image to open in full size.
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File Type: jpg 1970 olds wiring diagram 1.jpg (4.17 MB, 10 views)
File Type: jpg 1970 olds wiring diagram 2.jpg (4.14 MB, 9 views)
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