[Peave]

Anyone have a suggestion on where to find a replacement switch?  Picture of back is attached.  I tried Paneltronics but they said that Tiara in Holland populated the panel.  Boat is a 2002 3400 Express.   Pretty sure mine is shot as I can't get any ohm reading across any of the terminals and both gauges check good but read nothing.    

[Final Pursuit]

Have you contacted Tiara customer service? They are usually quite helpful.

[hiccup]

Agree, reach out to Tiara, they may have a p/n and source.

If that's no luck, to help you search, it is a 4 position 3 pole rotary selector switch, although based on your picture, your boat is only using 2 of the positions, so you could get away with a 2 position/3 pole selector switch. Let us know what you find out.

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I also will give you some details on how the switch should work so you can test it with a meter (maybe you already understand this but it may be good for the next person).

Based on your picture, we'll number the terminals 1-15 starting at the top left and working CCW; so the terminals along the left edge, starting at the top are 1, 2, 3, 4 , 5 and the terminals along the bottom left to right are 6, 7, 8, 9, 10 and the terminals along the right edge from bottom to top are 11, 12, 13, 14, 15.

Here is how the switch should operate:
Position 1: 1 connected to 2; 6 connected to 7; 11 connected to 12
Position 2: 1 connected to 3, 6 connected to 8; 11 connected to 13
Position 3: 1 connected to 4, 6 connected to 9; 11 connected to 14
Position 4: 1 connected to 5, 6 connected to 10; 11 connected to 15

Also, because you're only using 2 of the 4 positions, I wonder if it is possible that your switch (which will only send signals to the meters in positions 1 & 2) is position 3 or 4 (perhaps the knob is on wrong).

Just food for thought!

[Peave]

In case someone else has similar needs here is what I learned.  Tiara bought the switch from Amp Tech Inc., item #321230.  Amp Tech was bought by Myoteck Industries in 2018 but still has a manufacturing location in Manistee, MI.  I called them (231)299-1230 and talked to a knowledgeable lady.  She said they no longer make this but I could find just the rotary switch at Digikey.com, their part #EG1955-ND which is manufactured by E-Switch.  I will need to unsolder the old switch from the board and resolder the new one.  Part is $7.19 plus shipping.   Hopefully this will solve my issue.

[hiccup]

That is great info, thanks for coming back and sharing, that does look like the correct part, but I would be certain to test the switch as I described above before going to the trouble of unsoldering/soldering!