[DeTomaso] Tachometer

[SOBill at aol.com]

No.
 
The OEM Pantera tach is driven by the signal on the side of the  ignition 
coil which is connected to the ignition points. 
 
This signal has an approximately 200V transient signal each time  the 
points open and spark is generated at one of the 8 cylinders.
 
If an after market ignition box is installed in a Pantera with an  OEM 
tach, a tach adapter module will be required to convert the ignition box  normal 
12v 20% duty cycle square wave signal into an equivalent of the OEM  
ignition points/coil signal.
 
An alternative to a tach adapter module is modify the OEM Pantera  tach 
internal circuitry to accept a 12v tach signal. The tach adapter is easier,  
quicker, and cheaper.
 
Have fun  today,

sobill at aol.com  

 
In a message dated 10/1/2010 3:24:11 P.M. Pacific Daylight Time,  
shawkins777 at comcast.net writes:

Does a  12 volt square wave signal drive the tach in a  Pantera?

Steve
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