Originally Posted by
Bigbassfish
So originally my boat has 4 gauges, voltage, tach, Speedo, and fuel. I’m in the process of redoing my dash, and tonight I removed the tach as it is no longer needed, and swapped the voltage meter with an analog trim gauge. To do so, I removed the tach, and then taped off the wires leading to it, one blue illumination wire, two black grounds, two purple ignition wires, and a grey sender wire. As for the trim gauge, I simply removed the voltage gauge, and used the black ground and purple ignition from it, plus the trim sender I already had behind the dash. When I turn the key on, none of my gauges work now… I did find if I turn the nav lights on, the fuel gauge shoots way past full, and the trim gauge jumps a little, but still stays in the fully down position. Any ideas what I did wrong?