Temp Volt Oil Alarm Adjustment

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   Here is a picture of my '90.  Hope it helps.  I just finished with adjusting my module for the voltage alarm.  Let me know if you need any clarification.  You can adjust the low parameter for the alarms with R1,2 or 3.  The IC compares the signal voltages to the voltages adjusted by the resistors to energize the corrisponding transistor, which applies the emmiter signal (in this case the ground)to the associated warning.  Here is a breakdown of the module wiring.  

Purple-12V hot, 

black-chassis ground, 

Orange-ground signal for the audible alarm

WHT/BLK ground signal for Temp Light

Lt BLU/WHT ground signal for Oil Press Light

PRPL/WHT ground signal for Voltage Light

WHT/BRN-Temp signal voltage (Adjust R1)

Lt BLUE-Oil signal voltage  (Adjust R2)

Voltage alarm               (Adjust R3)

This is the IC NTE 987 which is the brains of the module.

The schematic below was taken from a post by Lewy2001.

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Hawktique Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: June-27-2009 Location: Iowa Status: Offline Points: 456	Post Options Post Reply Quote Hawktique Report Post Thanks(0) Quote Reply Topic: Temp Volt Oil Alarm Adjustment Posted: May-10-2010 at 3:53am
	Here is a picture of my '90. Hope it helps. I just finished with adjusting my module for the voltage alarm. Let me know if you need any clarification. You can adjust the low parameter for the alarms with R1,2 or 3. The IC compares the signal voltages to the voltages adjusted by the resistors to energize the corrisponding transistor, which applies the emmiter signal (in this case the ground)to the associated warning. Here is a breakdown of the module wiring. Purple-12V hot, black-chassis ground, Orange-ground signal for the audible alarm WHT/BLK ground signal for Temp Light Lt BLU/WHT ground signal for Oil Press Light PRPL/WHT ground signal for Voltage Light WHT/BRN-Temp signal voltage (Adjust R1) Lt BLUE-Oil signal voltage (Adjust R2) Voltage alarm (Adjust R3) This is the IC NTE 987 which is the brains of the module. The schematic below was taken from a post by Lewy2001.
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Temp Volt Oil Alarm Adjustment

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