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INFO: 72 - 79 Gauge Clusters and Wiring

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Steve M. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve M. Quote  Post ReplyReply Direct Link To This Post Posted: 01-October-2021 at 2:25PM
I did mine at the coil. 
Steve M.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote forddude Quote  Post ReplyReply Direct Link To This Post Posted: 02-October-2021 at 4:10AM
Originally posted by Steve M. Steve M. wrote:

I did mine at the coil. 
What do you mean, run both wires directly to the coil?  Connect the IGN lead to the negative coil post?
72 GTS sportsroof, original survivor
72 GTS formal, parted
96 Tbird 4.6, 18k org mi
13 Stang 5.0 6spd
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californiajohnny View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 02-October-2021 at 6:58AM
no!
 power from the key into 1 wire of the tach, other wire of the tach to the positive side of the coil...
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Steve M. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve M. Quote  Post ReplyReply Direct Link To This Post Posted: 02-October-2021 at 7:04AM
Good catch John.  I should have been more specific.  It's a series circuit.  My method has all of the changes accessible from under the hood. Hence at the coil. 
Steve M.
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forddude View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote forddude Quote  Post ReplyReply Direct Link To This Post Posted: 02-October-2021 at 7:17AM
yeah that’s my question… how/where do I grab power from the key?  I do not have the sport wire harness so I need to run all new wires into the brown connector at the back of the cluster. 
72 GTS sportsroof, original survivor
72 GTS formal, parted
96 Tbird 4.6, 18k org mi
13 Stang 5.0 6spd
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Steve M. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve M. Quote  Post ReplyReply Direct Link To This Post Posted: 02-October-2021 at 8:12AM
Unless someone else has been in there,  just plug in the connector.  Change the  oil pressure switch to an oil pressure sender.  There may be other names for it. Exacpt for the tach, everything should work. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote forddude Quote  Post ReplyReply Direct Link To This Post Posted: 02-October-2021 at 9:42AM
Thanks, but it seems I’m not making myself clear.  

I do not have the sport dash wire harness. I do not have the sport eng wire harness either.   There is nothing to plug the brown 6 pin gauge connector into.  Im asking where to wire the IGN on the Tach to? Thanks


72 GTS sportsroof, original survivor
72 GTS formal, parted
96 Tbird 4.6, 18k org mi
13 Stang 5.0 6spd
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Rockatansky View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 02-October-2021 at 10:08AM
find this in the middle of a post by Psquare on page 1 of this thread

Originally posted by Psquare75 Psquare75 wrote:



For those that are troubleshooting Tachometer or ammeter wiring issues or those retrofitting a gauge cluster into a standard car the following rough sketches show the proper wiring paths:

1972 through 1976 (Green Printed Circuit) Tachometer:





72 GT Ute
   
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californiajohnny View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 02-October-2021 at 8:00PM
here's the location of the pins in that brown connector, if that helps?
 if you had the matching connector from another harness with a couple inches of wire you could splice onto thatWink
i have a bad sport dash harness but IIRC i chopped that connector out for tim... (i think the tail light connector is the same???)

JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Neal View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Neal Quote  Post ReplyReply Direct Link To This Post Posted: 14-August-2023 at 3:25AM
subscribed, thanksClap
--Neal
1972 Gran Torino Sport
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