I have a OMC Tackometer year 97. I want to connect this to a Evinrude 40hk 1994. There are many cables coming out from the Tach. What cables do i need? I know they changed the system 96. The problem is that the tach is for the new system and the engine is for the old system. I just need the rmp. <br /><br />Thanks for help.
