Mercruiser Pre Alpha trim senders wiring schematic

nic420

Petty Officer 2nd Class
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Jul 15, 2010
Messages
169
I am rebuilding my trim senders limit and position. I do not know where to hook up the wires once you pull them through the transom. I have the manual but it doesn't say anything about the wiring. Please advise.
 

Fun Times

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May 16, 2009
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8,807
Hi there, What year and engine model are you working with?

Do you have two round pucks on the outside gimbal ring? Or do you have the
hydraulic sender unit inside the boat?
http://forums.iboats.com/forum/engi...rive-mercruiser-165-inline-6-trim-sender-unit
http://www.mercruiserparts.com/selectModels3.asp?type_id=DRA

The Trim Limit wires run over near the trim pump and plug into the blue and purple wires.
The Trim Position wires will attach to a ground and a brown wire with a white stripe (gauge sender wire).


http://sterndrivetools.com/Replace your R, MR or Alpha One Trim Sender Switches.html
 

alldodge

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Mar 8, 2009
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40,741
Here is the late model wiring diagram
Trim wiring Merc 2012.jpg

Wires for the position sender goes to gauge (brown/white) and other goes to ground (black), doesn't matter which
 
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