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Author Topic:   Factory Tach addition
73 Green Hoss
Journeyman

Posts: 22
From: Waxahachie,TX
Registered: Mar 2002

posted 03-11-2002 10:58 PM     Click Here to See the Profile for 73 Green Hoss   Click Here to Email 73 Green Hoss     Edit/Delete Message   Reply w/Quote
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

posted 03-11-2002 11:12 PM     Click Here to See the Profile for pthornton   Click Here to Email pthornton     Edit/Delete Message   Reply w/Quote
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

posted 03-11-2002 11:36 PM     Click Here to See the Profile for 73 Green Hoss   Click Here to Email 73 Green Hoss     Edit/Delete Message   Reply w/Quote
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

posted 03-11-2002 11:51 PM     Click Here to See the Profile for Hemikiller   Click Here to Email Hemikiller     Edit/Delete Message   Reply w/Quote
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

posted 03-12-2002 09:25 AM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
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

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MCA Member # 47773

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