Author Topic: A7 Kill Switch Wire Question  (Read 1081 times)

Offline Riderusty

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A7 Kill Switch Wire Question
« on: 15.01. 2016 03:26 »
I am finally approaching completion of my '53 A7. The bike was mostly in pieces when I found it and I believe I've gotten most of the wiring sorted out. I believe the kill switch is correctly located on the left center of the handle bars-my question is the type, size, color of the wire connecting it to the mag. Any info would be greatly appreciated.

Tom B.
1953 BSA A7 Plunger-under resto.
1962 BSA B40 -awaiting resto.
1968 BSA A65-restored
1959 BMW R50-restored

Online WozzA

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Re: A7 Kill Switch Wire Question
« Reply #1 on: 15.01. 2016 05:32 »
G'day Tom....  the Kill switch on my 57 swing arm is mounted on the right side of center,
a solid WHITE wire from the Mag to the switch which when pressed earth's out the mag..
The horn & headlight dip switch are mounted on the left hand side...
'51 Golden Flash Plunger
'57 Golden Flash Swingarm

Melbourne
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Offline Riderusty

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Re: A7 Kill Switch Wire Question
« Reply #2 on: 15.01. 2016 20:31 »
Thanks, WozzA, definitely helpful. Hard to tell what was where when most of it is in boxes.

Tom B.
1953 BSA A7 Plunger-under resto.
1962 BSA B40 -awaiting resto.
1968 BSA A65-restored
1959 BMW R50-restored

Offline trevinoz

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Re: A7 Kill Switch Wire Question
« Reply #3 on: 15.01. 2016 22:21 »
Originally the kill switch was mounted dead centre of the handle bar, between the clamps, on the standard models.
The models with the damper knob retainer had the switch to one side.

Offline Riderusty

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Re: A7 Kill Switch Wire Question
« Reply #4 on: 17.01. 2016 22:08 »
Thanks guys, definitely clarifying thing. Does anyone know the size/type of wire used?

Tom B. 
1953 BSA A7 Plunger-under resto.
1962 BSA B40 -awaiting resto.
1968 BSA A65-restored
1959 BMW R50-restored

Offline Clive54bsa

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Re: A7 Kill Switch Wire Question
« Reply #5 on: 18.01. 2016 00:24 »
These show the wire to be white and the button mounted dead center of the handlebars.
Don't know about the gauge, but as it only has to ground the mag, I'd think 16-18 swg.


'54 GF,  '61 SR,  '71 B50MX

Offline scotty

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Re: A7 Kill Switch Wire Question
« Reply #6 on: 18.01. 2016 00:47 »
here's pic of my auto advance mag end cap
it's got a port for the wire to enter the mag
the kill switch on my rig is mounted centre on the damper knob retainer
the wire i'm using has the following marks on it
"Belsen high temp 7mm metallic cable 11"
It works fine
If your cut out wire connects to the outside of the mag end cap then i would say 16G would be ok
HTH
S

Scotty

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Offline Riderusty

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Re: A7 Kill Switch Wire Question
« Reply #7 on: 18.01. 2016 22:50 »
Scotty and Clive, thank you! I believe that gets me there.  My mag is the same as Clive's with the additional port in the end cap.

Tom B.
1953 BSA A7 Plunger-under resto.
1962 BSA B40 -awaiting resto.
1968 BSA A65-restored
1959 BMW R50-restored