Re: OMC 3 cyl Trim and Tilt

[chinewalker]

That is correct, the trim units changed about 1978. You can add a unit from most 3-cyl., V4 and V6 models from the late 1970s on up to the early 1990s. Make sure you get the appropriate wiring harness for it, as earlier systems used a 3-wire pump motor (UP/DOWN/GROUND), which was changed to a 2-wire system (UP/DOWN) beginning in 1982. Simply put, if the pump motor is external to the clamp brackets, it won’t work for you.