Converting a 67 to indash tach - Team Camaro Tech
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post #1 of 10 (permalink) Old Jan 15th, 01, 11:14 AM Thread Starter
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I'm curious, now that good 67 repro tachs are available, as to what I would need to do to replace my indash fuel guage in my 67 with a tach. The car was originally a 6 cylinder that now has a V-8 non-guages engine harness and original dash harness. I guess I would replace my Autometer Phantom voltmeter on the console with a fuel guage. So, what do I need to do to replace the fuel guage with a tach?



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Justin
-1967 Camaro SS350

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post #2 of 10 (permalink) Old Jan 15th, 01, 11:21 AM
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I know youll need a tach circuit "board" and the metal housing for a tach along the coresponding wire harness. Aside from that im not sure what else you need. I am going to do the same thing in my 68 now that the tic toc tachs are available.
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post #3 of 10 (permalink) Old Jan 15th, 01, 11:31 AM Thread Starter
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I think the circuit boards are the same for 67 cars whether they had the tach option or not, correct? Would I just need to run a wire from the coil to the tach? I'm not familiar with the original 67 tach...is it electronic in the sense that you just need to run a wire from the negative side of the coil to the tach like modern aftermarket tachometers?

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-1967 Camaro SS350

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post #4 of 10 (permalink) Old Jan 15th, 01, 11:49 AM
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you are right about the circuit. my 68 needs a different one. Your all set with the stock one. Sorry.
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post #5 of 10 (permalink) Old Jan 15th, 01, 10:19 PM
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JRT, the existing housing you have should work. The 67 housing holds both in dash guages. The tach wire is actually a resistor wire that goes to the negative side distributor. I have mine out now so if you need something let me know. My tach is being repaired.
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post #6 of 10 (permalink) Old Jan 16th, 01, 02:43 AM
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You say the tach wire is resistor, what type of resistence are we talking about, something similar to the + coil wire (points)
I am going to install a tach and gauges in my 67 convert and wanted to do it correctly

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69 rallye green X77 Z/28,1967 SS 396 Conv. 1974 c-10 454 swb
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post #7 of 10 (permalink) Old Jan 16th, 01, 08:23 AM
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Sorry, I got confused. That happens easily, especially late at night. The tach lead is not a resistor wire.
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post #8 of 10 (permalink) Old Jan 16th, 01, 08:50 AM Thread Starter
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So the tach lead is just a regular wire that runs from the negative side of the coil to the tachometer? Would I need to replace the fuel guage wire in the instrument cluster plug with this wire coming from the negative side of the coil?

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Justin
-1967 Camaro SS350

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[This message has been edited by jrt67ss350 (edited 01-16-2001).]
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post #9 of 10 (permalink) Old Jan 16th, 01, 02:34 PM
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That is correct. I have a large wire harness and a single yellow wire that connect to the rear housing. I am assuming the yellow single lead is the tach lead. I don't have my cluster now so I can't be sure, but the wire that is connected to the negative side of the coil is yellow as well. Do you have this single plug also. It may be the fuel guage lead on non-tach cars.
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post #10 of 10 (permalink) Old Jan 16th, 01, 03:30 PM
 
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in an above post it was stated that a circuit board change would be needed , ?
that is not true on 67's they use the same circuit board on both the fuel gauge or tach it is just the wiring that is different ,
no kidin !

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67 RS 327 deluxe tach gauges , with 1967 Virginia plates 759-898

[This message has been edited by 67rs327 (edited 01-16-2001).]
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