I acquired this 1984 Ebbtide Dyna Trac 18' late last year and have been fixing it up a little at a time. I'm look for the control to replace or rebuild.

I needed the same one for my '88 Classic 50 Mercury and got it from a buddy but there's a marine junk yard near me with everything you could want for a boat/motor of that vintage.  Check ebay.

Thanks Alex, does this junk yard have a name and phone number I can call? BTW I'm on Ebay everyday and a lot of their items are new controls. I'd rather keep the original style that came with the boat. The motor is a Merc 150