Hi Guys,

I have a 2012 Merc Pro XS 225
S/N: 1b863739

I have analog gauges and currently my trim gauge is stuck in the full "up" position. This happens whether the boat is on or off. I'm looking for some guidance to help troubleshoot if it's the gauge, or a bad sender.

I found an old post talking about disconnecting a brown/white wire and turning the key on and seeing if the gauge moved, but my gauge doesn't have any brown wires. It yellow, purple, black, and a 4th color I'm forgetting right now...

It was working fine until recently when I had the oil pump and compressor replaced. So not sure if that's related, or if it's possible something was disconnected during that process. I haven't removed the sender from the motor yet, just looked at it while it was attached and the wires look intact.

Any tips you can provide to begin troubleshooting this before buying a new sender would be great.

Thanks!

-Nate