69 camaro tach to msd6al - Team Camaro Tech
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post #1 of 4 (permalink) Old Jan 21st, 09, 08:11 PM Thread Starter
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stan
 
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Location: chalmette louisiana
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69 camaro tach to msd6al

Hi Guys,
Name here is stan.
Just purchassed a 69 camaro with a big block and it has a msd6al ebox and msd distributor and msd coil.
Putting the factory tach back in and orderd the msd 8920 adapter to make it work.
Trying to figure out if it was a voltage triggered or Current triggered from the factory.
It says in the instructions from msd it depends where the tach hooked up originally from the factory to the coil + or - side which I DON'T KNOW.
I guess I could try it both ways but afraid to damage the new tach.
Thanks in advance for any info
Stan
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post #2 of 4 (permalink) Old Jan 21st, 09, 08:45 PM
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Paul
 
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Re: 69 camaro tach to msd6al

Factory tack hooked to negative side of coil.
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post #3 of 4 (permalink) Old Jan 22nd, 09, 05:54 AM Thread Starter
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stan
 
Join Date: Jan 2009
Location: chalmette louisiana
Posts: 154
Re: 69 camaro tach to msd6al

Thanks Paul that helps me out a bunch.
This is got to be the coolest site on the web.
Hope I can return the favor one day
Stan
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post #4 of 4 (permalink) Old Jan 22nd, 09, 07:46 AM
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Re: 69 camaro tach to msd6al

Welcome to Team Camaro Stan!

There are some really nice wiring diagrams in the "electrical basics" sticky at the top of this forum. Here's the link, tach is shown in "dash with gauges" diagram (some of the diagrams will require a password you'll have to get from JimM, but not this one):

https://www.camaros.net/forums/showthread.php?t=93576

Eric
69 'vert project big block/TKO 600 RR
68 'vert driver RS clone -- gone!
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