PME breaker box keeps tripping the "unlock" circuit

[Opfire]

Does anyone know what the circuit protects? I can not identify anything that is no longer working other than the Fairia gauges

[brian wolfe]

2005 Air Nautique Team Edition.
My "Unlock" circuit is tripping also. Engine starts/runs. Dash is dead. Pulled the Gateway and it looked clean. Had the carpet replaced in the offseason, meaning eveything had been removed. Started the engine up this season with an old battery. Dash was working on initial start, then "Unlock" breaker tripped, dash disappeared.
Would really appreciate any suggestions. What causes the "unlock" circuit to trip - how can I get this to stop.

[Opfire]

for the life of me i can not remember, I want to say it was an issue where we had the high pressure fuel filter replaced and the mechanics swiched up a wire, once we figured that out, all worked fine.

[brian wolfe]

I found it. There was a short in the Red/Yellow/Black wires going to Stereo. Before i determined it was a short, sent my Breaker and key pad to Nautique Parts, they tested them for free. (Thank you)

[aarongfl]

Thanks Brian! Had the same problem with the UNLOCK fuse tripping. The radio and the ballast gauges would turn off when the UNLOCK fuse randomly trips.
I found red and black wire sheathing was rubbed through and shorting out on the metal strap that holds the radio.