INST Fuse blowing

Yeh. Radio connector. That is not a factory diagram, and they leave stuff out. Those ARE easier to follow sometimes. You should go to MyMopar and download the factory manual. There is a chart on past the diagrams which details all/ most of the connectors. Unfortunately the 73 book IS more difficult in some ways, but you do need it for some details. The diagrams show the radio, it's power connector is "CI-13" which means "Connector, Instrument, no. 13" That part is at coordinates D-38, page 8-163. Then you go back to the connector charts and find CI-13 which is the connector drawing itself That is page 8-168

radio2.jpg

radio1.jpg