The transducer mount outside with the speedo wheel is for an aftermarket plotter or GPS and not factory.
The factory depth gauge sounds like it has a bad transducer.
As Roger said it may be easier and better money spent to replace the entire system.
__________________
1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
|