I purchased a 1990 Galaxy 190 a while back and while I really like it (and it's sure a lot better quality than the mid-80's Galaxy models), I'm a little disappointed that they didn't bother to put a trim indicator on the dash. It's got a 4.3L Merc Alpha One engine and outdrive setup. How hard is it to wire up a trim indicator? Will I need a bunch of parts or just the gauge and some wires?