Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 271Get this manual
13Connect remote oil tank pressure hose to to crankcase fitting 14Attach relay ground harness to lower electrical plate mounting boltTorque bolt to 16.5 lbft(22.5 Nm)Attach relay positive leads (RED) to BATIERY SIDE of starter solenoid with nutTorque nut to 45 lbin(5.0 Nm)
15Re-connect remote control harness to powerhead harness connector and wires as shown
55919Remote Oil Tank Pressure Hose