EAP10 aux switch

Read through troubleshooting and found this "If the blink is a 1 blink repeating at the main LED of Powernet Distribution Box (PNDB) and 1 blink repeating at the Cab Load Disconnect Switch (CLDS) with the CLDS in off position then the PNDB detects voltage on the output side of the cutoff solenoid. This can be caused by the cut off solenoid mechanically sticking closed when it should be open or an inverter/battery charger is powering the output side of the PNDB.
If the Solenoid can be heard clicking when the CLDS is cycled, check for inverter or battery charger. Otherwise the PNDB is most likely faulty."

 

Also found, if 3 blinks repeating at main LED at PNDB and main LED of CLDS with CLDS in off position, then Circuit 425F or 425G short to ground.
Checks: Check PNDB connector X1, pin 4 for 11 volts. If there is no voltage at pin 4 replace the the PNDB. If voltage present, check for 11 volts at CLDS connector X1, terminals 1 and 2, and PNDB connector X1, terminal 5 to find location of the short in the circuit.
Hope this can give you some direction. Would be interested to know your testing results.