I have one of your units on a purchased boat--there is no literature and I want to get this operational and look at 2 more for our other vessels. I require a manual and instructions and schematic--are these available via e-mail. The codes on the unit are: date: 4998 Ser.No 182648 Model 81-0205-12(215) .
Any information you may be able to provide would be very helpful. After we review performance I will conisder another purchase.