Wiring Issues (operator error im sure)

[murrayfish]

First off, I have a 1973 115 hp Mercury SN: 3525706. I bought a new boat side wiring harness and ignition switch. I'm not positive that I know what i'm doing but I do have a fire extinguisher close by.

Im not up to speed on the terminology of the wiring and have different words for what I assume is the same things. I don't know what wire to hook up to what terminal. Listed are the instruction which make no sense to me.... please clue me in on what's what.




So far I think: Yellow wire to S terminal
White wire to I terminal
Gray wire to C terminal
Red wire to B terminal
Orange wire not used
Brown wire to Tachometer (not to switch in any way)
I have 2 terminals that are labeled M, one is ground one is Magneto. The wiring harness guide doesn't say ground or Magneto...
I'll have more questions based on replies, I know I can do this!
Here is where i'm at a loss. Thanks in advance for your help.

 

[alldodge]

To start an outboard the magneto needs to be (edit) removed from ground. To stop the engine the (edit) magneto is grounded. Ground one of the M connections and connect the magneto to the other, it makes no difference which one

 

[Chris1956]

You do not use the M terminals on your motor. The I terminal must have power on it, when the ign switch is in the run or start position. The rest of your wiring is correct.

 

[Chris1956]

AllDodge, His motor has a battery powered CDI ignition. He has no magneto or ign killer wire to worry about.

 

[murrayfish]

AllDodge, His motor has a battery powered CDI ignition. He has no magneto or ign killer wire to worry about.

Yes, one question i have is, Do i have a "Battery type ignition" or "alternator driven ignition"
I was assuming Battery type....

I can to this and tomorrow morning I'm going to start! Wish me luck.
I need to put her in the water

 

[Chris1956]

If your motor is 1979 or older, you will have the battery-powered CDI Ignition. It is easy to tell. You will have a distributor and one coil. An ADI ignition has no distributor and six coils (one coil per cylinder.)

 

[murrayfish]

She starts, she runs!

To do list:
impeller
attach Mercontrols
attach Throttle and Shift cables to controls
at least one seat... i guess i could stand?
All the Misc wiring in a boat
Then, the stuff that makes it pretty for the wife.

I'm into this $1000 but have a tandem axle trailer to sell from a donor boat.

Life is good!

 

[murrayfish]

She starts, she runs!

To do list:
impeller
attach Mercontrols
attach Throttle and Shift cables to controls
at least one seat... i guess i could stand?
All the Misc wiring in a boat
Then, the stuff that makes it pretty for the wife.

I'm into this $1000 but have a tandem axle trailer to sell from a donor boat.

Life is good!