Centwer gauge ID
Thread Starter
Racer
Joined: Mar 2015
Posts: 306
Likes: 20
From: Greenville SC
Centwer gauge ID
I currently have dash out of my 79. what is the little printed circuit board pictured here? (boittom left pic 1) it has a bulb on the other side. If this has nothing to do with the tach, which isn't even in the same location as the tach, then there was not a tach board in my speedo/tach gauges. picture 2.
There was nothing attached to speedo/tach cluster where the 3 connectors are located. (pic2)
How was the tach even working???????
There was nothing attached to speedo/tach cluster where the 3 connectors are located. (pic2)
How was the tach even working???????
Burning Brakes
Joined: Aug 2001
Posts: 854
Likes: 7
From: dudley ma
Mine is in the center console. At one point I was looking to replace it ...not working. But I found out then nobody makes them. Could be different now. But at that time Willcox could fix them I believe. Or he had a limited amount of used ones. I forget now......Stinks getting old.
Thread Starter
Racer
Joined: Mar 2015
Posts: 306
Likes: 20
From: Greenville SC
Tach Board
I am reviving my post to answer one final question. I have discovered my car did NOT have the tach board attached to the back, as you see from the pic 2.
I was unsure how to remove the 3 contact points in order to install a new printed circuit board under them.
The tach worked (not sure of accuracy) apparently with out the board.
What is the purpose of board? I assume I need one???
I was unsure how to remove the 3 contact points in order to install a new printed circuit board under them.
The tach worked (not sure of accuracy) apparently with out the board.
What is the purpose of board? I assume I need one???
Thread Starter
Racer
Joined: Mar 2015
Posts: 306
Likes: 20
From: Greenville SC
Tach Board
I am reviving my post to answer one final question. I have discovered my car did NOT have the tach board attached to the back, as you see from the pic 2.
I was unsure how to remove the 3 contact points in order to install a new printed circuit board under them.
The tach worked (not sure of accuracy) apparently with out the board.
What is the purpose of board? I assume I need one???
Without this forum and especially the videos from Willcox I would be lost.
I was unsure how to remove the 3 contact points in order to install a new printed circuit board under them.
The tach worked (not sure of accuracy) apparently with out the board.
What is the purpose of board? I assume I need one???
Without this forum and especially the videos from Willcox I would be lost.
Burning Brakes
Joined: Aug 2001
Posts: 854
Likes: 7
From: dudley ma
It is not a board per say...it is there. It is more of a thicker piece of plastic (that will flex)with the copper running thru it. But yours is there.
Last edited by 78pace; Oct 9, 2017 at 02:49 PM.
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Le Mans Master
Joined: Dec 2007
Posts: 6,422
Likes: 591
From: McHenry Illinois
The tach board is attached to the rear of the tach and the studs extend front to rear through the contact clips shown in the pic. Those clips can be removed by pinching them together.
Le Mans Master
Joined: Dec 2007
Posts: 6,422
Likes: 591
From: McHenry Illinois
http://repairs.willcoxcorvette.com/w...allation-2.pdf
Burning Brakes
Joined: Jul 2017
Posts: 1,114
Likes: 149
From: Frisco TX
Your tach would not have worked without the board. Here is a repair procedure from Willcox that will explain where the board is located.
http://repairs.willcoxcorvette.com/w...allation-2.pdf
http://repairs.willcoxcorvette.com/w...allation-2.pdf
Can you adjust the tach if the readings are off? Or do you have to replace it?
Burning Brakes
Joined: Jul 2017
Posts: 1,114
Likes: 149
From: Frisco TX
Mine is factory original.
The rear I ask is that I have an 78 L82 with 3:55 gears and the tach shows 3500 RPMs at 70 MPH. The thread indicated that that would be the RPM's for 3:73 or my tach is registering wrong.