Originally Posted by
78fourby4f250
Fmc400 I knew it didn't have anything to do with the 73-79 trucks I just didn't know if a modern radio had to be insulated cause of the metal dash in these trucks. I've never done a radio install in a vehicle this old.
Gotcha. The answer is no, the fact that you are bolting the head unit chassis to grounded metal on the truck is not a problem.
Also, if power going to the head unit were shorted, there wouldn't be enough voltage to the head unit to power the display. You'd also either pop a fuse or fuse out the wiring.