Transom harness
1 - Steering
2 - Digital trim
3 - Pitot
4 - MerCathode
5 - Ground
6 - Trim bypass
7 - Trim from helm
8 - Trim pump
9 - 16‑pin connector
Transom Harness Wiring Diagram (TowSport, Inboard)
a - Transmission shift sensor
b - Steering/pitot sensor
c - 16‑pin transom harness connector
d - Transmission over‑temperature sensor
e - Trim/transmission over‑temperature sensor ground
f - Shift solenoid B
g - Shift solenoid A
h - Reverse pressure sensor
i - Forward pressure sensor
S R P N M L K J H G F E D C B A
GRA
BLK/PNK
YEL/GRN
RED/GRN
PPL/BLK
GRA/RED
WHT/ORN
BLK/GRN
BLK/GRN
PPL/BLK
GRA/RED
WHT/ORN
WHT/LT BLU
BLK
WHT/BLK
TAN/YEL
TAN/YEL
BLK
BLK/PNK
GRA
WHT/LT BLU
BLK/PNK
GRA
WHT/BLK
RED/GRN
BLK
BLK
YEL/GRN
E D C B A
D C B A
1212
CBACBA
S101
S100
S104
58503
a
b
c
d
e
f
g
h
i
Instrumentation and Controls
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 4D-19