Firstech, LLC. COMPUSTAR CM3000 Manual De Usuario

Firstech, LLC. Technical Data (CM3000) 

8 

Tach Learning Switch: 

 
This is the small black button on the side of the brain used to program 
tach.  Once you have found the correct wire simply press this button 
while the vehicle is running and the siren will chirp once to confirm that 
the tach is learned.  If the Siren chirps three times the tach source is not 
valid.  Refer to page #5. 
 

Dip Switches: 

 
Switch #1:  This is used to set either Tach or Alternator mode.  If the 
switch is set to the ON position the unit is set to Tach.  If the switch is 
set to the OFF position then the unit is set for Alternator sensing. 
 
Switch #2:  This is used for setting run time.  If the switch is set to the 
OFF position then the run time is set for 15 min for gas engines or 25 
min for diesel engines.  If set to the ON position then the run time is set 
to 25 min for gas engines or 45 min for diesel engines. 
 

Jumper Wire: 

 
This jumper is connected when you receive the brain.  While the jumper 
is connected  the module is set for manual transmission mode.  When 
installing on automatic transmissions the jumper must be cut.  Please 
note:  if a unit with a cut jumper is installed on a manual transmission 

the warranty will be void and Firstech will have no liability. 
 
 
In conclusion, if you should have any additional questions do not 
hesitate to contact our technical support staff.  We can be contacted toll 
free at 888-820-3690. 
 
Best regards, 
 
Technical Support Staff 
Firstech, LLC. 

support@compustar.org