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73-87 Chevy _ GMC Trucks => Interior & Equipment => Instrumentation => Topic started by: WillSquared on April 06, 2014, 06:53:44 pm

Title: Adding factory tach?
Post by: WillSquared on April 06, 2014, 06:53:44 pm

Another change I'd like to make is to add a factory tach.  I have found everything I think I'd need but the smaller fuel gauge.  Will the 75-80 one work on my 86?  Best I can tell I'd need the printed circuit for a tach, tach itself, tach wiring harness, lens and small fuel gauge.  Does that sound correct?  Anything I'm missing or overlooking?

For reference purposes mine is an 86 without a tach with the clock.


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Title: Re: Adding factory tach?
Post by: rich weyand on April 06, 2014, 07:40:52 pm

I have an 86 box, tanks, senders, and they work fine on my 1978 original dash with fuel gauges in both the large and small positions.  (Two tanks, two gauges.  Why not?)

Title: Re: Adding factory tach?
Post by: bake74 on April 06, 2014, 08:59:00 pm

     Here are a few threads on the subject.

http://forum.73-87chevytrucks.com/smforum/index.php?topic=9604.0

http://forum.73-87chevytrucks.com/smforum/index.php?topic=23623.msg197030#msg197030

http://forum.73-87chevytrucks.com/smforum/index.php?topic=25901.msg219959#msg219959

Title: Re: Adding factory tach?
Post by: WillSquared on April 06, 2014, 11:58:33 pm

Thanks for the links.  Good info there.  Looks like it's doable.


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Title: Re: Adding factory tach?
Post by: WillSquared on April 07, 2014, 09:59:55 pm

Is there any reason the 79-81 small fuel gauge wouldn't work in my 86 cluster?


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Title: Re: Adding factory tach?
Post by: Captkaos on April 09, 2014, 09:31:05 pm

If you have the printed circuit no reason at all.