Tach wiring for a 2003 40TLRC

flyerbpb1968

Cadet
Joined
Nov 25, 2010
Messages
7
I have a 2003 40TLRC yamaha outboard. I am trying to get a schematic for the controls, 703, a digital tach #48s or#488, and the engine so that I can conect all together. If anyone can help please reply...
 

flyerbpb1968

Cadet
Joined
Nov 25, 2010
Messages
7
Need wiring schematic

Need wiring schematic

Wiring schematic for digital tachymeter for 2003
Engine #40TLRC
Control Unit 703
Digital tach. is a 48S or 488 model.
Need to know what to connect from tachymeter to controls, and or, alternate sources.
All wiring schematics would help.
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Need wiring schematic

Re: Need wiring schematic

your going to need the trim/oil warning harness that plugs into the 4 pin and 2 pin connector at the engine and runs to the tach.
your going to need the power/tach send harness that runs from the pigtail on the 703 box to the tach.
after that its simply plug and play.
your tach numbers do correspond to anything I have.
pictures of the front and back would help a lot.
 
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