Of course I used the tach connection on the distributor but the manual said some tachs might work, some might not. Mine will not show below 900 rpm or above 2000.
Might be easier to get the right tach--Ed
BUSIA
32 foot, no flybridge, twin 350 (chevy) Crusaders, closed (freshwater) cooling, 1:1 Velvet drive transmissions.
Proud to be IBEW.