Neutral wire rd400

[rd400greenhorn]

Hi guys
So started on wiring or at least try to😅

The wiring is ground up, m unit everything from scratch.
First question

The neutral wire, where does that go to?
I have a new one on the switch in the engine,

Best regards

[1976RD400C]

It goes from the switch on the motor up to the green light in the gauges. It's the light blue wire coming out of the gauge assembly.

[rd400greenhorn]

I dont have factory harness
I have Nothing but parts that needs to be connected to a custom wiring harness

[rodneya]

What gauges are you going to be running? If they have a neutral light, then the blue wire fron the neutral switch is basically the ground wire for the neutral light.

[rd400greenhorn]

Ah okay. Iam a total neeb at this wiring so Its baby steps 😅

Iam using a moto gadget pro

[Dvsrd]

I am 99.9 % sure the Moto Gadget m unit does not have a dedicated channel for the neutral light. I believe you also have a Moto Gadget dash?
The neutral light bulb or led gets +12vdc when ignition is on, from your m unit or ignition lock, however you wire it. It then gets grounded via your neutral switch when gearbox is in neutral. It is just a basic light bulb.
I believe you may find that some other warning lights,  etc will require some wiring external to the m unit. Just get a stock wiring diagram and the wiring diagram for your dash/instrument/warning light pod, as well as the m unit diagram. Make a big pot of coffee, sit down and study the wiring diagrams. And figure it all out for yourself.

[rd400greenhorn]

Dvsrd

True!
I Will have to get the stock diagram and print it out? So i can start to make sense of this

[Striker1423]

Dvsrd

True!
I Will have to get the stock diagram and print it out? So i can start to make sense of this

The neutral light has a power and a ground. The ground was originally light blue. On my RD250 I ran a new wire up to the neutral light plug inside the headlight from the switch. One long wire.