1985 Mercury Outboard V-300 V-3.4L Shop Service Manual, Page 209Get this manual
Troubleshooting theUp" Circuit (WhenTrailer" Circuit Works) Trim engine to full "Down" positionDisconnect purple-white wire from black wire with purple sleeve, at
PointSConnect black Voltmeter lead to Point and fed lead to purple-while wire al Point 6Depress "Up" trim switChBattery voltage should be indicatedBattery Voltage Indicated:
No Voltage Indicated:
Reconnect purple-while wire and black wire with purple sleelle, at Point 6Disconnect blue-while wire from black wire with blue sleeve, at Poin 13Connect fed Voltmeter lead 10 black wire wllh blue sleeve, at Poinl 13Depress "Up" trim swi lch and check lor ballery voltage
II remote control is equipped with push button style trim switch connec fed VOllmeter lead to