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new guy on the block, 73 coupe 351W


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hello forum, im new here and just thought I'd share my new project, I've had my 1973 mustang coupe for about a month, she has a 94 351w from a ford lightning. The motor has been converted back to carburetor but all the wires are there for fuel Injection. She starts up and runs seemingly fine but has some stuff that needs to be addressed such as none of my guages work, no speedo, fuel or warning lights. Would really like to fix this issue but don't know where to start. Any help would be appreciated thanks.

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Welcome from Rhode Island.


does you car have gauges or idiot lights?

it sounds like you have some wiring modifications to do!!


1972 Mustang Convertable :run_horse:  [button=http://www.7173mustangs.com/forum-garage?filterxt_uid=1507]Visit My Garage[/button]

Visit the Mustang Car Club of New England Facebook Page [button=https://www.facebook.com/MUSTANGCCNE]MCCNE FB Page[/button]


Visit the Mustang Car Club of New England Web Page [button=http://www.mccne.com/]MCCNE Web Page[/button]

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Welcome from AZ

[button=http://www.7173mustangs.com/ezgallery.php?action=myimages&u=3961]My Mach[/button] [button=http://www.7173mustangs.com/forum-garage?filterxt_uid=3961]Check out My Garage[/button]




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It has the original guages in the car, came with another set too. I swapped the guages out but still no luck. Im not sure if the original guages will work with my car with the motor swapped or not.

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Welcome to the site from Virginia.

Mike AKA Ole Pony & Rare Pony
Our current Mustang garage/driveway
1973 Mustang Convert - Bought in 1974 - Still have it!
2004 Mach 1 Oxford White Auto, Bought Sept 06







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Welcome from TriCities WA



351C 4V cc heads, 10.5 : 1 CR, 290 Herbert cam, Flat top forged pistons, forged connecting rods, Atomic efi,

C6 with Gear Vendor overdrive, 3.89 Tru Trac, Hooker Super Comp with 2 1/2" Pypes Exhaust.        


Some Mod pictures can be seen at: [button=http://www.7173mustangs.com/forum-garage?filterxt_uid=2026]Bojo's Garage[/button]



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Howdy from Phoenix. Speedo you need to see where the gear driven cable ends up. I am not knowledgeable in later year cars but at some point Ford and everyone else when from mechanical to electrical speed sensors. (Do you have a modern transmission too?)


Gas gauge should no matter. Ground the wire at the sending unit and see if the gauge responds. Don't leave it like this for long, it is bad for the gauge.


73 Convertible - 351C/4V CC heads/4bolt/forged flat tops/comp 270/rhodes/mallory unilite/tri-power/hookers/glasspacks/c6/3.50 limited slip/Gear Vendors/Global West sub frames, strut rods and shelby style traction bars/ Rear sway bar/tilt steering (not original)


Pics of modifications included in: [button=http://www.7173mustangs.com/thread-1973-convertible--3335]My Garage[/button]


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::welcome:: from Luxembourg, Europe.

Please remember to post a pin on the member map under "fun stuff" at the top right of the page.

"If I were you...... I´d rather be me." 😛
Check out my video:

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I know it 95 most companies went to electronic speedo, tranny has a speedo cable port on back side of it, I put a new speedo gear on, based on rear end gears and tire size went with a 18 tooth. But still no speedo. Also looking inside the tranny I don't see a gear that drives the speedo. As far as fuel guage I can't seem to get the plug to go onto the fuel sending unit. Not sure if the plug is damaged or the sending unit but it will not connect

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Welcome from eastern Tennessee! ::welcome::


The Rickster, a 1973 Mach 1, being restored as a tribute to my brother who passed away with COVID in July 2020.

Billy, a 1976 Ford Bronco, also needs a lot of work.

El Guapo, a 1986 F150, frame-off Resto-Mod.

Also, in the queue, a 1950 Ford F1 Panel truck and 1962 Falcon Ranchero

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  • 1 month later...
  • 5 months later...

Welcome from Canada!!


Marco/Andrew bros



"When the world is running down you make the best of what's still around."- Sting and The Police







1972 Ford Mustang Mach 1 (Father & sons restoration project)


- 351 Cleveland H-code w/ factory Ram-air induction


 - FMX 3-speed trans


 - 9-inch rear with 3.25:1 ratio

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