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Post Info TOPIC: 1964 Pontiac factory tach


Poncho Master!

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1964 Pontiac factory tach


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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35629400_10156759690857847_2400554837751 



Canadian Poncho Superstar!

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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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'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.



Poncho Master!

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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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A Poncho Legend!

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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 sedan 283 4 speed 43,000 miles


Poncho Master!

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Anything in a shop manual wiring schematic?

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63 Pariesienne 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. Parting out a 63 Parisienne convertible.

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



Poncho Master!

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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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A Poncho Legend!

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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 sedan 283 4 speed 43,000 miles


Poncho Master!

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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 Pariesienne 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. Parting out a 63 Parisienne convertible.

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



A Poncho Legend!

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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 sedan 283 4 speed 43,000 miles


Canadian Poncho Superstar!

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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 Islandbug.gif

'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.



Poncho Master!

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

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