WakeWorld - Perfect Pass Trouble

Does anyone know on a 2006 SAN 210 how to get to the Perfect Pass paddle wheel connector? My Perfect Pass has been going crazy lately and I thought I would first check the wiring, then replace the paddle wheel with Nautic Laugic GPS replacement. Where is the connection, in the floor or under the dash? The gauge on my dash sometimes goes all crazy, like a digital matrix or something, is this the gauge or the black box acting up? Sometimes the gauge doesn't work but the Perfect Pass, you just have to guess what speed it is set at and other times the display is really, really faint but you can see it. Lately the gauge just goes all digital matrix like on us. It has been working in RPM but now doesn't get any signal from the paddle wheel.

Any help or insight would greatly be appreciated!