Which wire is the Ignition power source?

[Martin Slovakia]

Hi guys, lot of you know that I like to play around with my F3s. This time I have serious technical question.
I need to find -> the wire that sends 12 volts to your engine’s coil/ignition system when the key is turned on
Now I am looking at that bloody ignition box that has 4 cables coming out..
Left and Right are just Frunk and Rear Seat "mechanical opener" cables.. not important at all...

I have DESS antena that goes all the way to where is the Battery
and I have DESS cable that has like i dont know.. XY tiny cables.. Now the questions is, what cable is the one I am looking for?

Thanx for help.. I am reading the service manual - the big fat professional one, but its not really there or maybe I am blind...
Martin

[rugercharger]

hi martin violet/blue violet/green or violet/orange depending on which coil. this is as per my 2019 manual

[IdahoMtnSpyder]

If you are looking for the wire from the ignition switch that powers the spark plug coils you won't find it. It doesn't exist! power to the coils and injectors comes directly from the ECM. On my 2014 RT wiring diagram there are two power leads from the ignition. One is orange and goes to lights. The other is orange/pink and powers up a bunch of other stuff.

[spyder01]

Is this so you can power the flame system you are building?

[Martin Slovakia]

Yes, exactly, but it seems that what buddy above said, it wont be possible :(((((
or better said, unless i will cut every single cable that goes somehow to sparkplugs :(((

Is this so you can power the flame system you are building?

[Martin Slovakia]

Hi,
thanx for reply, very useful!!!! But why always there must be a hard way :(((
is there a way to send me your RT diagram please.? martinthevlogger@gmail.com is my mail... i think RT has a lot common with F3s from 2015.
there must be a way... or do you think there is not???
any idea how the coils get ground signal?




If you are looking for the wire from the ignition switch that powers the spark plug coils you won't find it. It doesn't exist! power to the coils and injectors comes directly from the ECM. On my 2014 RT wiring diagram there are two power leads from the ignition. One is orange and goes to lights. The other is orange/pink and powers up a bunch of other stuff.

[Martin Slovakia]

hi martin violet/blue violet/green or violet/orange depending on which coil. this is as per my 2019 manual


now i am getting bit confused... guys :)
are those cables going from DESS big chunk of cables from ignition, or is this located somewhere else...
coz there is different story what Mr. Idaho posted and that also seems logical... :((((

[IdahoMtnSpyder]

hi martin violet/blue violet/green or violet/orange depending on which coil. this is as per my 2019 manual


now i am getting bit confused... guys :)
are those cables going from DESS big chunk of cables from ignition, or is this located somewhere else...
coz there is different story what Mr. Idaho posted and that also seems logical... :((((
I believe he's referring to the DESS antenna coil that surrounds the ignition key area. It picks up the ID signal from the key so the DESS can determine if the key is legitimate or not. None of the wires in the bundle go to the DESS from what I can see on the wiring diagram. It's a separate cable.

[IdahoMtnSpyder]

Hi,
thanx for reply, very useful!!!! But why always there must be a hard way :(((
is there a way to send me your RT diagram please.? martinthevlogger@gmail.com is my mail... i think RT has a lot common with F3s from 2015.
there must be a way... or do you think there is not???
any idea how the coils get ground signal?
It's actually not hard, just very sophisticated! :)

First, I suggest you buy a copy of the service manual for your F3. It's about 30 USD from www.canammanuals.com.

The coils do not connect to ground. They get power from a relay activated by the ignition, and then on the ground side they connect to the ECM. The ECM controls them by making/breaking the connection to ground internally in the ECM. Most of the items on the Spyder are connected to power and controlled by switching the ground side. That is normal Japanese method, and I think European method. I'm not sure how many countries besides the US typically control power by switching the power side. I wouldn't connect anything to the ignition coils circuits. You could easily upset the ECM.

Here are a couple of diagram portions that may help you.

188365 188366