Tachometer 3,500 RPM
3" round, std pt or mag ign, 4 imp. ( 8 cyl )
6 volt, pos or neg grd
6 Volt light kit 186-6A2L sold separately
Mounting cup sold seperately 693B-714
 
Note !   On pos. ground engines this will work with points only.  On neg. ground engines it will work with points or electronic ignition.