Stereo wiring

[Ark9512]

Hey all
We bought our Zinger 26ks three years ago. The original owner had crossed the wires when hooking up the battery.

The only problem with have now with the electrical is our stereo won’t work (linear am/fm).

We tried buying a replacement but it won’t work either. It keeps blowing the fuse.

Just to double check - the solid white wires are the ground and the black&white are the hot??

Any help would be greatly appreciated.