Radio inop at times as well as wipers some times wipers won't work unless radio is on

Pretty weird!

Thoughts:

. Test all under dash fuses with a test light or multimeter:

https://www.askmehelpdesk.com/cars-t...tml#post252145

. Remove and service the multi-function switch that controls the wipers. Try carefully taking it apart and cleaning and dirt or grease from contacts. Replace switch, if necessary.

. Check all wiring, connections, and grounds.