Ignition switch and charge light on LS

[Rookie_V#60]

My LS did not even have the kill button when I got it.
Have now installed an ignition switch and a charge indicator LED,
because the ammeter does not indicate exactly.
Cheers Rudy

[muskrat]

G'day Rudy.
I put a charge light on my A10 Cafe as I don't have an amp gauge, and a toggle switch as an engine cut out.
Hope there's no chance of sparkles that close to your carb.
Cheers

[trevinoz]

The long stroke had the kill button on the end of the magneto.

[Rookie_V#60]

The long stroke had the kill button on the end of the magneto.

Sorry not mine, may be lost in the last 70 years. I first had to install a new cap (with kill button ) for the magneto.

[bsa-bill]

Good useful post Rookie - thanks

[muskrat]

Yes my 51 A7 had the button on the end cover. Think it got lost in a few house moves.
Cheers

[PatM20]

Hi Rookie,

That wiring diagram is for a negative earth bike.

I guess you know that, but thought I would point it out just in case.

Regards

Pat

[Rookie_V#60]

Yes Pat,

it is a 1948  Longstroke A7 .... and they had .....   negative earth !!!  I think BSA switched a little bit  later to pos. earth.

Cheers Rudy
.

[duTch]

 That's a neat setup Rookie.  Does it light up when the key is turned on, or just when the system is charging/floating or just on ?
  It doesn't appear to be wired to the lights as a reminder that the lights are still on when you shut down (like what I need)...

 I have the same magneto end cover, but removed the button and run a wire to a cut-out switch that is part of the OIF/Conical brake lever block. Not really an 'ignition' switch though is it; engine runs when disconnected and stops when connected ?

 I'm also running -ve earth, but it doesn't look quite like that.... 

[Rookie_V#60]

Hi Dutch,
the switch has an opener and an closer . If you take off the key the opener ist closed and short cut the  magneto. If you put the key in and turn it on the opener "opens"  (no more killing the magneto) and at the same time the closer switch on the LED.
 It has + from the ammeter and - from the D-Terminal of the dynamo.
When the dynamo starts loading the D-Terminal get also + and the LED is dark (off).
That's all,  to see If the ligths are on you can install an other LED via ligth switch.
Cheers Rudy   

[duTch]

 Thanks RookaRudy That's about how I figured, but.;
       

When the dynamo starts loading the D-Terminal get also + and the LED is dark (off).
That's all,  to see If the ligths are on you can install an other LED via ligth switch...   

 That's the bit I was curious about, so when you pull up at idle/low revs, I take it the LED comes on again (due to low generation,cutout cuts out-as they do) ?

[Rookie_V#60]

Yes on very low revs the LED comes again,  it is a charge indicator!
 
 

[muskrat]

Yes it's a balance thing. When the flow (for the want of a better word) from the dynamo exceeds the flow from the battery the light goes out and vice versa.
Remember the old cars at night you'd be watching that dull glow of the red light, hoping to make it home.
Cheers

[duTch]

 I think being green was what made me curious, wouldn't red be better?

[muskrat]

mine is red, red means trouble.
Cheers