MerCruiser Wiring Diagrams 5.0L 5.7L Inboard Engine 2001-2006

5.0L (305 cid)
5.7L (350 cid)

Model Years: 2001 2002 2003 2004 2005 2006

General Information

Connect Wires Together with Screw and Hex Nut; Apply Liquid Neoprene to Connection and Slide Rubber Sleeve over Connection. Power for a Fused Accessory Panel May Be Taken from This Connection. Load Must Not Exceed 40 Amps. Panel Ground Wire Must Be Connected to Instrument Terminal That Has an 8-Gauge Black (Ground) Harness Wire Connected to it. Lanyard stop switch lead and neutral safety switch leads must be soldered and covered with shrink tube for a water proof connection. If an alternate method of connection is made, verify connection is secure and sealed for a water proof connection.

1 Audio Warning Alarm
2 Tachometer
3 Oil Pressure
4 Water Temperature
5 Battery Meter
6 Ignition Switch
7 Trim Indicator
8 Read/Observe NOTE 1 and 2.
9 Read/Observe NOTE 3.
10 To Engine Wiring Harness

Power Trim System

1 - 20 Amp Fuse
2 - Ground Bolt (Floor Mount)
3 - UP Solenoid
4 - 110 Amp Fuse
5 - DOWN Solenoid
6 - Trailer Switch
7 - Neutral Switch to Instrument Wiring Harness
8 - Trim Limit Switch

Wire Colors

BLK = BLACK
BLU = BLUE
BRN = BROWN
GRY = GRAY
GRN = GREEN
ORN = ORANGE
PNK = PINK
PUR = PURPLE
RED = RED
TAN = TAN
WHT = WHITE
YEL = YELLOW
LT OR LIT = LIGHT
DRK = DARK

MerCathode System Wiring Diagram

1 - Controller
2 - 20 Amp Fuse
3 - Electrode
4 - BLACK Wire - With Engine Harness or Separate

Wire Colors

BLK = BLACK
BLU = BLUE
BRN = BROWN
GRY = GRAY
GRN = GREEN
ORN = ORANGE
PNK = PINK
PUR = PURPLE
RED = RED
TAN = TAN
WHT = WHITE
YEL = YELLOW
LT OR LIT = LIGHT
DRK = DARK

MerCruiser Wire Information

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