ETM (Main Relay) making loud audible clicking sound

[800artfreed]

Please check your ground wire connections. There are many throughout the wiring harness. Check out Youtube.com and learn about conducting voltage drop tests. Please test the voltage drops for the main battery + cable and the - cable from the battery to the chassis ground. Try to understand where VIDA was indicating where it found the 10.49 volts. That the first place indicative of a problem. After you get it running make sure the alternator voltage is around 14 volts to fully charge the battery.