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Post Info TOPIC: 1965-1966 Factory tach installation


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1965-1966 Factory tach installation


Thanks to member 77srx, I now have this template back again, just received it in the mail.

If anyone needs it, I am going to copy it and I'm more than happy to send it out to someone who wants to install a tach in their 66.

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1966 Strato Chief 2 door sedan 283 "survivor"


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Old thread resurrected.

I am slowly working towards putting a factory tach in my Strato Chief. One thing I don't have, and don't know what it looks like, is the connection at the firewall.

My question is this --- Does anyone here have a 66 full size Pontiac with a factory installed tach in it? I don't want to see one that was done somewhere down the road, I need to see the firewall connection on a factory installed unit.

I used to think it was a grommet but the assembly manual drawing makes it appear like a connector.

The red arrow, (lower right side of the page) points to the spot I mean. The tach wire comes through the firewall right beside the two fuse box harnesses that exit the firewall.

tach .jpg



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1966 Strato Chief 2 door sedan 283 "survivor"


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the tach harness is a stand alone and goes from the coil to the tach. The area where your red arrow is pointing is the grommet that has two holes in it that the wiper harness also goes through.

www.summitracing.com/parts/opg-gbc11562

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63 Grand Prix -needs restoration, 65 Catalina Ventura 4 speed - resto almost completed, 66 Catalina Convertible - at body shop



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Brad, I always thought that too, but take a close look at the harness, opposite end from the red arrow. The tach wire with the fuse holder is there. That's what makes me think that's the connection for the tach.

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1966 Strato Chief 2 door sedan 283 "survivor"


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I'll see what I can find for photos. The "pink wire" is only for tachs that are TI tachs or have Transistorized ignition and needs a 12v source. Standard tachs do not use 12v source. I believe that there is a reproduction "harness" for these tachs. I'll look for that also.

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63 Grand Prix -needs restoration, 65 Catalina Ventura 4 speed - resto almost completed, 66 Catalina Convertible - at body shop



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Yes, I found the repro harness but it only has a short brown wire to the fuse holder, then black/pink from there to the tach. I didn't think that is right either.

And yes, the standard tach only has brown from the coil, gray for a light, black for a ground.

I just really want to make it look right when I install it.

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1966 Strato Chief 2 door sedan 283 "survivor"


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https://www.opgi.com/catalina/06245/

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1966 Strato Chief 2 door sedan 283 "survivor"


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yeah, that harness is not the correct one. It also states for illustration only. Ames part PM06245 lists for w/out TI, but no photos of the harness. I'll see if I can find some original photos.

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63 Grand Prix -needs restoration, 65 Catalina Ventura 4 speed - resto almost completed, 66 Catalina Convertible - at body shop



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While I'm on this topic, I'm also looking for a picture of a firewall on a 66 full size Canadian Pontiac with a factory4 speed installation. I'd like to see the firewall area where the speedometer cable comes through.

Still haven't found anyone with a 66 Canadian factory installed tach either but I did speak to the guy who has my old Grande Parisienne and hopefully he will be getting pictures for me shortly. I just wanted to ask here in case that doesn't work out.

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1966 Strato Chief 2 door sedan 283 "survivor"
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