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Canadian Poncho Homepage -> Canadian Poncho -> General 58-64 Full Size Forum -> 1964 Pontiac factory tach
Post Info TOPIC: 1964 Pontiac factory tach
Urban_suburban


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1964 Pontiac factory tach
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does anyone have any wiring diagrams or can someone tell me how or where the wires for the factory tach should go. Ours is not working but I am seriously doubting the wires are correct.  They have been repaired but I think they are wrong 



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Pontiacanada


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Hope this works:

002.JPG

It uses a U.S. Pontiac harness. I got one at: M & H Electric Fabricators (www.wiringharness.com) Part #04605. Excellent harness ... VERY original!



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Prince Edward Island

'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.

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Urban_suburban


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It should. Mine has a brown blue and white wire. Brown wire is in attached under the hood. The blue wire is illumination. And someone has the white wire attached to a ground crimp on eye that is not factory. I got to thinking that the tack does not seem to have power

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4SPEED427


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Brown certainly should be the - side on the coil, that was pretty standard for GM tachs in the 60's. I have read online that many tachs used a white wire for ground, so that sounds right. Blue must be the light but you should be able to see that on the back of the tach, if so.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
DonSSDD


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Anything in a shop manual wiring schematic?

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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic
Urban_suburban


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I couldnt find anything in the manual. I would love to know the right way to take it apart and make sure that there is not a 4th wire that has been broken off

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4SPEED427


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I tried the assembly manual but no tach in the wiring diagram there.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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DonSSDD


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Carl, is there anything in the RPO section of the AM? That's where any options are in Chevy AM's.

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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic
4SPEED427


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Nothing in the 64 manual, no.

The manual really only starts with good RPO stuff in 66 and by 69 it's even better.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
Pontiacanada


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Ya, there is not a lot of info. on these tachs. I printed that diagram off the internet and substituted my coloured wires for the pink/gray.

The harness I bought colour matches the cut wires still attached on my existing tach perfectly.



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Prince Edward Island

'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.

Urban_suburban


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Do you have a ground wire or does it ground through the dash?

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