Run IGN Breaker Tripping Intermittently

Recently I've had a VERY intermittent issue with the Run IGN breaker under the dash in the PME tripping on my 2001 SAN. It happened the first time while driving thru some heavy chop. I reset it and it didn't trip again the rest of the day. I briefly looked under the helm + in the engine compartment and couldn't find anything loose. Battery connections are new. The next 2 outings, the breaker was tripped when I went to start the boat at the ramp to start the day. It didn't trip the rest of the day. Seems like the issue is either a failing component, a loose wire/connection, or a bad breaker.

I'm thinking my next step should be to systematically tap/shake different components to try to isolate what component is potentially causing a short (keypad, PME, dash connections, etc.).

Anybody else had similar symptoms? Any other suggestions on where to look next?

Thanks in advance!!!

Thanks for the suggestion! I haven't opened up the PME yet, the flashing neon warning signs had me scared :). But I'm guessing a little silicone when I put it back together will seal it right back up. I'll open it up this evening and see what I find.

Figured it out!! With KOEO, I started tapping all over the place. I found the sweet spot where I could get the breaker to trip....if I tapped on the left keypad (crap!). Fortunately, I decided to do some more testing and I unbolted the keypad. With the keypad separated from the dash, tapping it wasn't tripping the breaker anymore. Finally I figured out that the root cause was that retaining bracket for the fuel gauge (which is also the ground) had rotated and when it got jostled it would barely make contact with the IGN wire. It took a few seconds to adjust and retighten and I can no longer get the breaker to trip.