Mechanical Power Trim Wiring Diagram
a - PCM connector A
b - PCM connector B
c - PCM connector C
d - Power trim motor
e - +12 volts power
f - Down relay
g - –12 volts ground
h - Up relay
i - Power trim harness connector
j - Power trim harness connector—PCM side
k - Trim position sensor connector
l - Cowl tilt switch
m - Clean power connector
n - 14‑pin connector
IMPORTANT: Numerical callouts shown in the circuit diagrams are test points. Refer to Troubleshooting the Down Circuit or
Troubleshooting the Up Circuit.
Conventional Midsection (CMS) Power Trim
90-8M0146617 eng JULY 2018 © 2018 Mercury Marine Page 6C-5
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