1984-1986 Mercury Force 9.9 and 15HP Outboards Service Manual, Page 35Get this manual
9Test meter should read 6900-7800 ohms for part NoA12345 (WICO FWM1038), 13,50016.500 ohms for part No12370 (WICO FWM2531A#) on the top of the "COI CONTINUITY" scaleIf readings are high or low, replace thecoil10Remove the test leads from coil and turn selector knob to 'OFF' InstallationCalls to the stator plate: 1Position new coil at coil lamination of stator plate so that spark plug lead wire extends from upper left- inside (note position of spark plug lead wire in Figure 16) SELECTOR
5Connect coil ground lead wire from bottom of coil to lamination as shown in Figure 17