Boating How-To’s - Intermittent loss of power supply in choppy water

Have a 2004 213 Pulse Bluewave (Pulse was before Pure Bay) bay boat that loses electrical power to electronic panel ( lights flicker on & off) any ideas or suggestions? New member to this site, any help would be appreciated.

check for loose grounds or other connections

Don't forget to check the connections at the fuses also. With the lights on simply flick the fuse with your finger. if the lights flicker your onto something.

Check how the wire bundle is supported under the dash. It needs to have some slack. If not cut off the old supports (if any) and add new supports.The bundle should be supported by something other than the connections themselves. Also, of course check the connections of all electrical fittings. Make sure battery cables are tight and clean. Loose connections can cause sparks, bad for gas boats.

I recently replaced the fuse block and all the wiring ends in my brother in laws boat and was amazed at how well everything worked after that and how bad the connections had become.

I'd bet you have a weak ground. Had a similiar issue with an old Mako. I fixed the ground and it fixed the problem