I am working on a friend's 1984 Glastron w/120 I/O Mercruiser. Their are multiple switches that I have received a tutorial on. However, the titles and names of the switches and their functiuons have faded and I am not sure on some of them. In particular the trim switches. Press both to raise and one to lower. I do have a SELOC manual for the motor and drive but the gauges and switches are complletely different. The gauges are tach, speed, but no trim height gauge. Does anyone have an idea or a resource I could go to? Thanks