how do you know if it is good or not?
Tach Board Location
Thread Starter
Intermediate
Joined: Aug 2007
Posts: 44
Likes: 0
From: havelock nc
Tach Board Location
I am trying to change the tach board in my 78 vette. I removed the speedo/tach gauges and its not on the back of the gauges. Is it located inside the tach or some where else? 
Racer
Joined: May 2007
Posts: 285
Likes: 0
From: Ga.
If you remove the front clear plastic from the gauges, you can remove the tach from the front. There is either 3 or 4 screws that hold it in. Pay attention to the screws on the board it self when removing it. There are some plastic spacers that keep it from grounding out.
Instructor
Joined: May 2007
Posts: 208
Likes: 0
From: Houma La
My tach never worked right it always was pegged and when I let off it came up a little bit. When I pulled it it had a burn area like when a fuse blows. I changed it and all is good. When changing pay special mind to where each nut and screw comes from. Return them back in the same pattern to work properly.
Drifting
Joined: Nov 2005
Posts: 1,795
Likes: 1
and have it repaired and calibrated.
he did mine just under 2 years ago and has done
a number of them for the guys here on the forum.
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Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,852
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
If you want to just repair your board, we have them in stock ready for shipment. These boards are pre-tested and all you have to do is intall it in your old tach. It takes about 5 minutes if you have the tach out of the car.
Here is the link. http://willcoxcorvette.com/product_i...ducts_id=24036
Here is the link. http://willcoxcorvette.com/product_i...ducts_id=24036
Thread Starter
Intermediate
Joined: Aug 2007
Posts: 44
Likes: 0
From: havelock nc
Install a new calibrated Tach board today and the tach works like champ. The only problem I have now is the lights in the speedo/tach display no longer work. I must of damaged the rear circut board when I took out the speedo/tach assembly. (Just my Luck)
Has anyone ever hard wired the lights to bypass the circut board or do I need to spend $100. with shipping for a new board?
Has anyone ever hard wired the lights to bypass the circut board or do I need to spend $100. with shipping for a new board?
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,852
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
The fingers on the back of the board may have come loose from the plastic. Pull the center cluster out again and check this. When they come loose you can plug in the connector and push one over to the side while installing. It may just be as simple as putting some glue on it to hold it in place.
No need to hard wire the lights. If the circuit is bad you will see it when you remove the housing. If you do need one, we have them in stock.
44235W-X2417F 1978-1982 Speedo and Tach Printed Circuit 78-82 $44.00
http://willcoxcorvette.com/product_i...ducts_id=25310
No need to hard wire the lights. If the circuit is bad you will see it when you remove the housing. If you do need one, we have them in stock.
44235W-X2417F 1978-1982 Speedo and Tach Printed Circuit 78-82 $44.00
http://willcoxcorvette.com/product_i...ducts_id=25310
