Johnson 140 4stroke - 3 out of 4 gauges aren't working

[Boatnsteve]

Hoping someone can steer me in the right direction.

I recently acquired a Hydra-Sports 22 Ocean with a Johnson's 140hp 4 stroke motor. I don't know the year, but it is BRP branded so I suspect 2003 or 2004. Everything works great except 3 out of 4 of the engine specific gauges don't work:

• Tachometer = works
• Speedometer = doesn't work
• Oil Pressure = doesn't work
• Trim = doesn't work

Fuel and voltage gauges also work, as do most of the accessories that draw power from the main board (live well doesn't work). I also just installed electric trim tabs and didn't have a problem with getting power to the system.

If the Tach didn't work I'd suspect a single problem with the wiring harness, but it does so I'm unsure what to look for. Any thoughts?

Thanks,

Steve