Hey guys, I'm new to the forum, and have a question that I'm sure has been on here before... I have an old 1973 Signa, which has the 3 buttons for trimming the outdrive. I'm wondering is there a conversion of any sort out there in which I could re-wire and place a up/down switch on my throttle control? I would imagine there would be something like this available.... Thanks in advance for any help or suggestions!!