2001 BF 90 wiring problem

[mark123456]

I have a 2001 BF 90 I have had since new. Recently the tach and tilt gauges stopped working, the indicator lights on remote and buzzer stopped as well. Engine starts and runs fine, tilt/trim works. I checked all fuses, 2 automotive type on powerhead and 1 glass type in wiring harness near gauges. I pulled apart all connection inside remote and on powerhead, no corrosion at all. 1 weird thing is both terminals ( red/white, and black) in the light bulb sockets in gauges have power but low power, my test light only dimly lights up. I checked buzzer in remote directly on a battery and it works fine. What else can I check. Thanks