Finding ignition Wire: 1993 40.5

Apr 25, 2021
22
hunter legend 40.5 Sequim
Hi All,

I'm most of the way through putting a new Balmar xt170 alternator and mc-618 into my 1993 40.5 with a yanmar 4jh2e engine (this will go with my lithium battery bank). I've got most everyting done except I can't tell which wire is the ignition wire?

There are 3 wires connected to the starter:
1 the battery cable
2 a red wire from the instrument loom... i presume this feeds power to the pannel and powers the buzzer when the key is in 'on'
3 and a black or silver or yellow wire that connects to the top of the starter, i assume this is the relay to engage the starter

Am i looking in the wrong place? Is there a separate igninition is on wire elsewhere in the loom? I tried to read the service manual wring diagram but i don' know how to tell what panel type i have and also, i'm not an electrician so i don't actually know how to read one ;) Pic below of my panel.

Has anyone else done this with an idea on what to run?

This is probably obvious but clearly not to me ;)

Thanks in advance.

1684719075782.png


Picture with those wires disconnected
1684719237617.png


I also had a coolant leak and have fixed it and am going to replace the ground, but this is the wire loom where it heads into the engine
1684718492681.png


Best shot i have of my pannel, think its type c?
1684719406002.png



My new alternator and j10 pullys
1684718428117.png
 
Apr 25, 2021
22
hunter legend 40.5 Sequim
Oh i think i need R from the original harness
1684723255079.png


Which is Red and black and is hopefully one of the only 2 unused wires....
1684723352888.png
 
Oct 29, 2005
2,358
Hunter Marine 326 303 Singapore
This Yellow arrowed wire should be the "ignition wire". If the cylinder to right is the solenoid and the cylinder below which is the starter motor.
 

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