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Author
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Topic: Factory Tach addition
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73 Green Hoss
Journeyman Posts: 22
From: Waxahachie,TX
Registered: Mar 2002
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posted 03-11-2002 10:58 PM
   
I have a '73 Mustang without a factory tach. Is it necessary to have the whole wiring harness to add a factory tach in this car? I can't find out this info Thanks
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pthornton
Gearhead Posts: 576
From: Austin, TX USA
Registered: Jun 99
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posted 03-11-2002 11:12 PM
The wiring harness for the tach car is different than the non-tach car. I am not sure if you can modify it.I guess you saw these on ebay? 
http://cgi.ebay.com/ebaymotors/ws/ebayISAPI.dll?ViewItem&item=1811409111&r=0&t=0
http://cgi.ebay.com/ebaymotors/ws/ebayISAPI.dll?ViewItem&item=1811406734&r=0&t=0
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73 Green Hoss
Journeyman Posts: 22
From: Waxahachie,TX
Registered: Mar 2002
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posted 03-11-2002 11:36 PM
Thanks for the reply,I need both of these items, I've never used e-bay before. What do you do??????
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Hemikiller
Gearhead Posts: 256
From: Clinton, CT
Registered: Feb 2002
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posted 03-11-2002 11:51 PM
Well first off, get yourself a Haynes manual for the 65-73 Mustang. There are complete wiring diagrams in the electrical section, will be a big help for this swap.
It is possible to add a tach and gauges to a non tach harness. It will require a bit of splicing and soldering of yuur existing harness. It's reasonably easy to do, but you'll have to remove most of your dash components to accomplish this. If you feel you can do it, let me know, as it's alot of typing to detail the whole installation.
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SteveLaRiviere
Administrator Posts: 30097
From: Saco, Maine
Registered: May 99
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posted 03-12-2002 09:25 AM
Did it to mine 20 years ago. It takes a different harness plug in, but you can swap the wires over. Here's an article about it in our articles section written by member Rich Pajzer: https://mustangsandmore.com/ubb/RichPajzerGauges.html ------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
MCA Member # 47773
Always borrow money from a pessimist, they don't expect it back.
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