Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 325Get this manual
POWER TRIM
Installation
1Paint any exposed metal surfaces to prevent corrosion2Apply Loctite 271 to screwsInstall trim system, starboard transom bracket, and tilt tube nut3Use 12 volt power source to extend tilt ram up to align upper swivel shaft hole and end of ramConnect trim motor wires [BLUE wire to POSITIVE (+), BLACK wire to NEGATIVE ()]If ram extends too far, retract ram by connecting GREEN wire to POSITIVE (+)4Install Upper Swivel Pin with slotted end to left (port) side of engine