Connect Tach to 12V? - Team Camaro Tech
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post #1 of 5 (permalink) Old Oct 6th, 10, 08:04 AM Thread Starter
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Glenn
 
Join Date: Jan 2008
Location: CT
Posts: 88
Connect Tach to 12V?

I've already connected an Autogage voltmeter to my 67. Is the IGN2 post on the back of the ignition key a suitable connection for the application? The directions for the gauge show the gauge connected to ACC on the key, but I'd prefer to avoid moving it if I don't have to. Thanks.
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post #2 of 5 (permalink) Old Oct 6th, 10, 10:04 AM
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Camarodude67
 
Join Date: May 2005
Location: Hartford, CT
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Re: Connect Tach to 12V?

I usually just run the positive for the Tach to accessory of the Fuse Box, 1 to ground and the other to the coil or HEI tach.

Jeff G.
69 Verts
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post #3 of 5 (permalink) Old Oct 6th, 10, 12:10 PM Thread Starter
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Glenn
 
Join Date: Jan 2008
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Re: Connect Tach to 12V?

Thanks, Jeff!
I see that you are just south of me...probably just a 'shout" away.
I-91 is close by and I'm itchin' to get this car together before the snow flies.
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post #4 of 5 (permalink) Old Oct 6th, 10, 02:26 PM
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Join Date: Mar 2002
Location: Austin, TX, USA
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Re: Connect Tach to 12V?

IMHO, both should be connected to an IGN source. I'm not sure if IGN2 on the switch is suitable or not. The reason IGN is a better choice is that it remains hot during crank. Also, you don't need to have your guages powered up if you want to listen to the radio in the ACC position.

Dave
========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #5 of 5 (permalink) Old Oct 6th, 10, 04:32 PM Thread Starter
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Glenn
 
Join Date: Jan 2008
Location: CT
Posts: 88
Re: Connect Tach to 12V?

Dave, what you said makes sense to me.
I've just realized that my thread title does not match the question I've posed. ( Tach/Voltmeter) I meant to talk just about the voltmeter, but I guess the same principle applies to both items.
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