Electric voltage drop when turning kill switch on/off or using horn

[Its been a long time]

Yep I said unusual, not factory. Might create confusion if not known it is a VR115.
Unless the OP states what is used a guess or a supposition works.

I am not expert at all with Type B regulators. But I think Red, Green, Black is a fairly common colour scheme for the three wires on that type of regulator? The Lucas regulator I have used has red to brown, green to green and black to black wire connections.

 

[jaybar6]

No, red from the Rectifier goes to the battery. It's the rectifier that supplies power, not the regulator. He's drawn it correctly.

I stand corrected, the regulator is powered by the brown wire circuit. but on the op diagram there is a red wire coming out of the regulator and joins the brown wire, this may of confused me.

 

[jaybar6]

Aehh --it depends

There are 2 different wires
One to coll Red / White going to orange
And Red to box
Maybe not any difference since both should have 12 V

But as I see it 2 different BB being experts would have used one if not any difference
High Power ?? Risking frying one Wire ? ---Just speculating
Or maybe just for the possibility using Kill Switch grounding Coil

If I recall, right you are using a relay that changes is perhaps

BB warns for that not having power on the Coils prolonged time fex Kick starting .. Can save 50 Euros ...draw it in the circuit before powering up
We can have a look

View attachment 341994

I connected the red wire from the Boyer box to the brown wire circuit which powers lots of devices with 12 volt. One does not want to connect it to the red/white wire which charges the coils as the coils are going to go 12 volt to 0 volt every time the engine fires. also there might be back emf and one does not want that charge going into the Boyer box. One needs a steady 12volt from the brown wire circuit.
It says Tri/BSA on the diagram and I bet the wires on these old British machines the wire is red(I don't know), of course the XS is brown after the ignition switch.

 

[Jan_P]

I need to check this I have them separated ( Box and Coils ) ..
Possibly connected wrong I cant check it now in storage
Can be something in that there is a pulse discharging Some electronics is sensitive to this

as the coils are going to go 12 volt to 0 volt every time the engine fires. also there might be back emf and one does not want that charge going into the Boyer box. One needs a steady 12volt from the brown wire circuit.

I Suspect it is a factor in the Gonzo setup as well as in other systems .
Not particularly Boyer seems better
But I remember hearing of these phenomenon in electronics Ground plane and whatnot

Not a electronics guy but the setup with a relay is growing on me. perhaps something for the Gonzo Boys to test also

The picture is from Boyer and XS 650 setup

 

[650Skull]

I am not expert at all with Type B regulators. But I think Red, Green, Black is a fairly common colour scheme for the three wires on that type of regulator? The Lucas regulator I have used has red to brown, green to green and black to black wire connections.

Factory, factory factory. I said factory set up.

OP Has not addressed why there are 4 wires. There was confusion about the 4th red wire.

I addressed the Factory regulator has 3 wires B, Gr, Br.....

 

[650Skull]

I connected the red wire from the Boyer box to the brown wire circuit which powers lots of devices with 12 volt. One does not want to connect it to the red/white wire which charges the coils as the coils are going to go 12 volt to 0 volt every time the engine fires. also there might be back emf and one does not want that charge going into the Boyer box. One needs a steady 12volt from the brown wire circuit.
It says Tri/BSA on the diagram and I bet the wires on these old British machines the wire is red(I don't know), of course the XS is brown after the ignition switch.

75 diagram, after ignition switch, Br wire goes into the stop switch, R/W comes out to feed the coils,

 

[Kevin Werner]

Dumb question here... What is the "refresh rate" of your meter. I too have a digital volt "monitor" off of my "brown" wire in my headlight bucket on both of my XS650s. Each of my monitors are not instant bat lag a little. Food for thought.