If the gauge has a plastic shell, then it is off a 1972 GT750 Suzuki, and the front end is off a 1973 Suzuki GT750. Difficult to tell from the photo, but you also seem to have the 1973 GT750 cast aluminium
Ed, Honda did an odd thing in 1964. They have two sets of serial numbers denoting that one specific year. There are CA77(78 for "late" style models) 4xxxxx numbers and yours which is the 6 digit number
I can't think of anyone personally in the AZ area, but I found a listing for http://www.azvintagecycles.com/ that might be able to take it on or direct you to someone in the area. If you are on FB,
Hello Robert, I was referring to the rear of the dash (as in photo 1, top), not just the LCD unit, but it doesn't matter any more because I see in your night-time photo that the backlight works. At
Hello Robert, I was recovering from a rather nasty accident, good to be back. As I saw in the pictures, there is a Lexan or Plexiglass piece (clear-like-glass) that (I guess) goes under the LCD.