It was around that time that merc was changing the force engines over to the merc wiring harness and control system if your force 90 has studs with nuts on the end that your control cable goes over and is held on with by the nuts you have the new merc system and yes it is compatable. If you have spring loaded ball connectors you have the old force system. good luck, bret<br /><br /> If you need further assistance please email me @ forcepower01@yahoo.com.
