CT

on the remaining drive. did you remove the puck and rotate by hand and make the gauge sweep properly?

in many cases (including both my drives) the bolt behind the puck rotated. (backed out a little) this is one of the reference points for the puck, so being rotated makes the gauge loose calibration and pin or not sweep at all.

if it's not a new boat, check the torque on the pivot bolt behind the puck......
If it happens to be stripped (another common problem) i have a solution......


One last thing - switch the wires and see if the starboard gauge (working gauge) will read port position properly. It may save time and expense trouble shooting before sending out the gauge.... if it is an obvious resistor brake... then...oh never mind my babbles

Ramb

Thanks Ram,

I did check the puck and it worked fine. In fact I could force the gauge to work by jiggling the resistor. The resistor had some freyed wires so that will surely cause some false readings out on the water.
Also I realized that my boat has multiple purple/white wires so once I located the correct one, things started falling into place.
It will be much nicer this summer knowing where those drives are at as I'm bouncing over the LOTO waves.

Thanks for everyone's help. The suggestions I've recieved off of this message board have saved me much time.