Yea.... 
Speedometer power issue
Thread Starter
6th Gear
Joined: Jan 2012
Posts: 6
Likes: 0
Speedometer power issue
I recently put a new printed circuit on the gauge cluster which brought all of them back to life except the temperature gauge which I am not sure how to rerun.
But my most pressing issue is that I also replaced the printed circuit on the speedo. I hooked them both back up before reinstalling the whole dash and I have no response from either the Rev counter, speedo, or any of the lights.
I don't know what the first step I should take is. Also does anyone have a link to a diagram showing which bulbs go where so I can make sure I have the amperage in the right place?
But my most pressing issue is that I also replaced the printed circuit on the speedo. I hooked them both back up before reinstalling the whole dash and I have no response from either the Rev counter, speedo, or any of the lights.
I don't know what the first step I should take is. Also does anyone have a link to a diagram showing which bulbs go where so I can make sure I have the amperage in the right place?
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,851
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
If you put a printed circuit on the speedo tach housing, safe bet the car is 1978-1982... With this in mind and if you have cruise control.. pull the cable loose from the transducer and attach a drill to it... see if the speedo works. If it does then you either have an issue with the transducer, the lower cable or the drive gear in the tranny.
If it fails you have a cable issue between the speedo and transducer.
On the tach.... there is a ton of info on your tach on my site. If you post the year i'll guide you to that info.
Willcox
If it fails you have a cable issue between the speedo and transducer.
On the tach.... there is a ton of info on your tach on my site. If you post the year i'll guide you to that info.
Willcox
Thread Starter
6th Gear
Joined: Jan 2012
Posts: 6
Likes: 0
I should have included that in the original post, but yes you are correct it is a 78.
I have not tried the drill test yet, hopefully that will come tomorrow and I can start getting it all back together.
I also discovered earlier when testing more electrical that I have a headlight issue now as well. I'll start a new thread for that one.
I have not tried the drill test yet, hopefully that will come tomorrow and I can start getting it all back together.
I also discovered earlier when testing more electrical that I have a headlight issue now as well. I'll start a new thread for that one.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,851
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Info on your tach can be found here..
http://willcoxcorvette.com/advanced_...&keywords=tach
and here..
http://willcoxcorvette.com/advanced_...s=tach&x=0&y=0
And there is a board installation video on youtube... if you do need a new board.
Willcox
http://willcoxcorvette.com/advanced_...&keywords=tach
and here..
http://willcoxcorvette.com/advanced_...s=tach&x=0&y=0
And there is a board installation video on youtube... if you do need a new board.
Willcox
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
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