87Rockwood's got a great point. There should be only one unfused circuit on board, and that's the starter cable (its just too difficult to fuse starters due to spikes, etc., and for that reason starter cable needs to be well supported & isolated by split loom anywhere it comes close to anything where a rub spot could short it to a wire, frame, or where it could rub thru a hose, etc.).
You should trace out any burnt wire to see why it burned, and make sure its fuse protected at an appropriate level. No point in waiting for the fire dept to tell you why the circuit failed, as they probably won't be able to identify it in the wreckage.
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project