Dash Tach Wiring Help

390 & up cid Monster Motors
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66pacecar
Posts: 11
Joined: Sat Jan 21, 2017 1:52 pm

Dash Tach Wiring Help

Post by 66pacecar »

I have a NOS factory dash tach that I just acquired and it has 3 wires:

Red with male bullet connector
Black with female bullet connector
and Blue w/black stripe that has male bullet connector

I have searched many articles and schematics online and everyone has different opinions.
I don't want to burn out the tach as it is NOS.
Can anyone help or provide correct installation of wiring?

Thank you!

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poboyjo65
Posts: 6000
Joined: Thu Oct 20, 2011 8:40 pm
Location: Camden, Tenn.

Re: Dash Tach Wiring Help

Post by poboyjo65 »

The important wires are the red & black. the other is for the light in it. this the way I hooked up mine.

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Johno
215-60-15 on 7x15's .... 29-15-15 on 10x15's

Lip Ripper
Posts: 1867
Joined: Wed Jun 06, 2012 5:47 am
Location: Lake Placid, Florida

Re: Dash Tach Wiring Help

Post by Lip Ripper »

That's weird. I always picked up the signal on the - side. On aftermarket tach's that is.

I looked in my 66 shop manual and nothing about the tach is mentioned.
66 Cyclone GT; 245/60R15's on 15x8's and 215/70R15's on 15x7 Magnum's.
There's nothing like the sound of a pushrod V8 singing at the top of her lung's.

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poboyjo65
Posts: 6000
Joined: Thu Oct 20, 2011 8:40 pm
Location: Camden, Tenn.

Re: Dash Tach Wiring Help

Post by poboyjo65 »

Lip Ripper wrote:That's weird. I always picked up the signal on the - side. On aftermarket tach's that is.

I looked in my 66 shop manual and nothing about the tach is mentioned.
newer aftermarket tachs are different. I used a faria tach, same co. that makes tachs for ford, made in the 60's & it had the same diagram on the tach itself.
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Johno
215-60-15 on 7x15's .... 29-15-15 on 10x15's

66pacecar
Posts: 11
Joined: Sat Jan 21, 2017 1:52 pm

Re: Dash Tach Wiring Help

Post by 66pacecar »

Thanks!

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