Perfect Pass Star Grazer upgrade

[jsimpson]

2003 206 signature edition. Upgraded Perfect Pass to the Star Gazer model, I now have an inop. analog speedometer.

Paddle wheel is working, analog Faria speedo will read 10 mph when boat is traveling at 20 - 44 mph

Prior to "black box" upgrade, speedo worked perfectly....?

Any idea's.....

[east tx skier]

You didn't happen to tap the perfect pass into the paddle wheel for the lake water temp, did you? Might be some signal confusion to your analog speedo. Other than that, got nothing.