Trim sensor wiring

Rich Novak

Petty Officer 2nd Class
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Jul 22, 2012
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181
Have 1988 mercruiser 4.3 xl
Replacing. Trim limit & sender switches.
The previous owner cut the old wires off so I don't know where they go.
Especially the purple wire and 2 blue .
I have 2 solenoids
I tried following the manual but still having a problem.
Thanks Rich.
 

alldodge

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Being a 1988 I'm thinking you have two solenoids, so here is the diagram
Power Trim 2 Solenoid.jpg


If you have only one solenoid let us know

Edit: woops you said two solenoid in first post
 
Last edited:

Rich Novak

Petty Officer 2nd Class
Joined
Jul 22, 2012
Messages
181
Have 2. Solenoids but both wires from. The senders are black, also my switch has only 2 buttons the trailer switch is on the throttle.
 

alldodge

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OK then yours would be like this

Trim wiring Merc 2012.jpg

The limit is on the port side and the gauge is on starboard. It doesn't matter which of the black wires coming from the limit or sender is connected to which other wire.
 

Rich Novak

Petty Officer 2nd Class
Joined
Jul 22, 2012
Messages
181
Ok but does the purple wire connect to the red wire going to the fuse,.
 

alldodge

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Ok but does the purple wire connect to the red wire going to the fuse,.

No, unless someone has change the color of a wire, there should be no purple wire with the trim limit of gauge. The trim gauge wire should be Brown/white
 

Rich Novak

Petty Officer 2nd Class
Joined
Jul 22, 2012
Messages
181
Ok thanks, I think I got it won't really be able to tell until I put the o/d back on
Rich
 
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