MerCruiser Power Trim Wiring Diagram 3 0 5 0L 5 7L 6 2L

The following power trim system wiring diagram details is for 2001 2002 2003 2004 2005 and 2006 MerCruiser 5.0L, 5.7L and 6.2L MPI engines. Some models may differ. Always use are repair manual anytime your servicing your MerCruiser or components. 



Models these procedures apply to:

Sterndrive (MCM)

5.0L MPI Alpha and Bravo, 350 MAG MPI Alpha and Bravo, 350 MAG MPI Alpha and Bravo Horizon, MX 6.2 MPI, MX 6.2 MPI Horizon

Inboard and Tow Sports (MIE)

POWER TRIM SYSTEM WIRE DIAGRAM

350 MAG MPI Inboard, 350 MAG MPI Horizon Inboard, MX 6.2 MPI Inboard, MX 6.2 MPI Horizon Inboard, 350 MAG MPI Tow Sports. 

20 Amp Fuse

The solid red wire is attached to the 20 amp fuse and leads to the DOWN solenoid. From the DOWN solenoid the red wire leads to the 12V battery.

Ground Bolt (Floor Mount)

The solid black wire connects to the floor mounted ground bolt. It also leads to the UP and DOWN solenoid and the 12 V battery.

UP Solenoid

The solid black wire leads into the UP solenoid and the down solenoid. Also attaches to the 12 V battery and the floor mounted ground bolt. One blue/white wire comes out of the UP solenoid and travels to the the trim limit switch. The blue/white also travels to the forward, neutral and reverse control handle. 

110 Amp Fuse

A green/white wire comes out of the 110 amp fuse and travels to the forward, neutral and reverse control handle. 

DOWN Solenoid

A green and white/white comes out of the DOWN solenoid and travels to another component not directly related to the function of the DOWN solenoid.

Trailer Switch

Trailer switch wires likely purple/white, red/purple, green/white and blue/white. Green/white leads to 110 amp fuse. Red/purple leads to 20 amp fuse. Blue/white leads to trim switch and DOWN solenoid.

Neutral Switch to Instrument Wiring Harness

Yellow/red wire leads to instrument wiring harness. 

Trim Limit Switch


Two black wires come out of the trim limit switch which lead to connectors that attach the blue/white wires, and the other connection connects the black wire from trim limit switch to purple/white wire. 

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