I try to stay away from forums like this, but I posted a solution to the Bergstrom AUX AC with engine running and saw this issue on the feed...
Also, you only need a relay if you want to control the AUX system via the dash. It goes without saying, but sending 12v through the twisted pair...
It's a DLB based system. Your average trucker won't have a Nexiq or the software to program it properly. Just trying to help people out.
I wouldn't wish a Navistar product on my worst enemy. Focus on the voltage drop off of pin 22 on the ECU 36 pin connector (AKA, Pin 4 on the main...
