Brake Wiring

Working on a Fantic Concord from the early 80's late 70's and have started the wiring for it. I have a general idea of what the wiring looks like but I am a bit stumped on the brakes themselves. I have these two brake switches (I think they are Tomos) that I will be replacing but am unsure of where they connect to. Is it supposed to be one prong connects to the rear light and the other to ground? Or is there some sort of cable I need to get?

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Re: Brake Wiring

Besides wiring you need to look at wiring diagram to determine if your ped needs normally open or normally closed switches. Open and closed refer to the state of the circuit before pulling the levers that activate the switches to the opposite position. Those switches come both ways and appear the same externally. To test them, use a multimeter in continuity mode.

Re: Brake Wiring

i literally have to close my eyes to imagine what happens in normal conditions. normal means when the little switch button is pushed in from your brake levers. now, if u have a tomos with internal ignition ground then the normal position would be....open. Now, if you have a bike with external ignition ground and spark is tied to your brake light filament normal would be....closed. pardon me if i got this backwards but takr a look at myrons page.

Re: Brake Wiring

It's a minerelli v1 here's the diagram i was trying to follow:

Would the two sides of the stop switch represent the two prongs on the parts a previously posted?

Re: Brake Wiring

> pat splat Wrote:

> -------------------------------------------------------

> i literally have to close my eyes to imagine what happens in normal

> conditions. normal means when the little switch button is pushed in

> from your brake levers. now, if u have a tomos with internal ignition

> ground then the normal position would be....open. Now, if you have a

> bike with external ignition ground and spark is tied to your brake light

> filament normal would be....closed. pardon me if i got this backwards

> but takr a look at myrons page.

Regardless of what you're working on, what it all comes down to is what circuit is the brake lights running off of? The ignition circuit, or its own dedicated lighting coil. Thats the difference.

Re: Brake Wiring

> live ɘvil Wrote:

> -------------------------------------------------------

> > pat splat Wrote:

>

> > -------------------------------------------------------

>

> > i literally have to close my eyes to imagine what happens in normal

>

> > conditions. normal means when the little switch button is pushed in

>

> > from your brake levers. now, if u have a tomos with internal ignition

>

> > ground then the normal position would be....open. Now, if you have a

>

> > bike with external ignition ground and spark is tied to your brake

> light

>

> > filament normal would be....closed. pardon me if i got this backwards

>

> > but takr a look at myrons page.

>

> Regardless of what you're working on, what it all comes down to is what

> circuit is the brake lights running off of? The ignition circuit, or its

> own dedicated lighting coil. Thats the difference.

hello, op shows brake switches, hard to tell if its internal or external ignition ground.

does your wiring look the same as diagram, colors? and if u have no wires at all, try to use like colored, it does make a difference.

yes, those two ends r the two wires.

Re: Brake Wiring

Jacob, the wiring diagram says normally closed switches. Ground for ignition exciter coil goes through both brake light switches. When one or both switches are opened ground goes through brake light bulb and lights it up.

So for this ped when switches are installed and brake levers are not pulled the white buttons will be depressed and there should be continuity at that point. To check your switches depress button and check for continuity from one terminal to the other.(edited)

Re: Brake Wiring

That's how to check if you have the correct switches for your application^^^.

If they are correct then wire them in series just like the above diagram shows.(edited)

Re: Brake Wiring

> pat splat Wrote:

> -------------------------------------------------------

> > live ɘvil Wrote:

>

> > -------------------------------------------------------

>

> > > pat splat Wrote:

>

> >

>

> > > -------------------------------------------------------

>

> >

>

> > > i literally have to close my eyes to imagine what happens in normal

>

> >

>

> > > conditions. normal means when the little switch button is pushed in

>

> >

>

> > > from your brake levers. now, if u have a tomos with internal

> ignition

>

> >

>

> > > ground then the normal position would be....open. Now, if you have

> a

>

> >

>

> > > bike with external ignition ground and spark is tied to your brake

>

> > light

>

> >

>

> > > filament normal would be....closed. pardon me if i got this

> backwards

>

> >

>

> > > but takr a look at myrons page.

>

> >

>

> > Regardless of what you're working on, what it all comes down to is

> what

>

> > circuit is the brake lights running off of? The ignition circuit, or

> its

>

> > own dedicated lighting coil. Thats the difference.

>

> hello, op shows brake switches, hard to tell if its internal or

> external ignition ground.

Are referring to the switches or the wiring to the coil?

Re: Brake Wiring

> Jacob Bishop Wrote:

> -------------------------------------------------------

> It's a minerelli v1 here's the diagram i was trying to follow:

>

> http://www.myronsmopeds.com/wp-content/uploads/2008/08/Minarelli-Wiring-Diagram1.jpg

>

> Would the two sides of the stop switch represent the two prongs on the

> parts a previously posted?

Yes.

Re: Brake Wiring

Richard Eberline /

A switch only breaks ONE WIRE. 90 percent of the time it is the positive signal or feed wire. Your hand brake pushes the button of the switch in, in the resting position. When you brake, you release the button on the switch and the light gets power.

Re: Brake Wiring

> Richard Eberline Wrote:

> -------------------------------------------------------

> A switch only breaks ONE WIRE. 90 percent of the time it is the positive

> signal or feed wire. Your hand brake pushes the button of the switch in,

> in the resting position. When you brake, you release the button on the

> switch and the light gets power.

Wrong. Electricity takes the path of least resistance. Ground is found through switches until they or opened. Then ground is directed through brake light bulb to light it. This is not a dedicated lighting coil circuit. It runs off of the ground side of the primary ignition coil. That means a constant ground must be maintained. The proof is on your screen in front of you in that wiring diagram above.^(edited)

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