E T X S E R I E S L I T H I U M B A T T E R I E S
21
Fault Monitoring Connection to Grand Rapids Technologies EFIS
The following example details how to connect the fault monitoring output to a remote 12V LED.
An incandescent bulb can NOT be used. A 12V LED has a current limiting resistor already built
into the bulb, so no additional external resistor is required. The positive wire (anode, typically the
red wire) of the LED should be connected to an electrical bus fuse/breaker (.25A to 3A ok)
downstream of the master switch, and the negative of the LED (cathode, typically the black wire)
should be connected to the fault monitor wire (wire out the side of the battery) of the battery. It is
recommended to connect the positive of the LED to a fuse/breaker downstream of the master
switch. 20-22AWG M22759/16 or similar wire is also recommended.
