Radio Worked But Now It Won稚 - New Cab Tractor

[MikZimb]

Anyone have more info or a part #for this plug kit? I replaced a radio and had problems with the new radio, but then realized the dome light does no work either. I disconnected and cleaned a few connections between cab& fuel tank and reconnected but it did not help. One of the connections did look corroded. The voltmeter shows 12 volts at dome light until I turn the light switch to on, then it shows 0. My tractor is a DK10 but appears to be very similar issue.

I am in the same boat. New cab tractor but now both radio and cab light stopped working. I can't seem to find any offending connectors.