[Healeys] Battery Switch wiring Late BJ8

[Bob Spidell]

E=Earth
B=Battery
C-B=Contact Breaker

Yes, the black and white wire goes to the coil.  With the switch in the 
"OFF" position, the battery circuit to ground is open and the coil is 
grounded and cannot produce a spark (an early "anti-theft" device).

In aviation, a similar setup to the black/white wire is called a 
"P-lead."  Since magnetos are always hot, the only way to disable the 
ignition is to ground the mags.


Bob



Weston Keyes wrote:
> Hello Folks,
>
>     Please enlighten a amateur electrician. My battery switch has a E, B and
> C-B terminal.
>
>     The manual doesn't show which terminal goes to which wire but  I "assume"
> that E is for the ground strap to the chassis, B is to the Battery and C-B is
> to the coil.
>
> There is a metal jumper between B and C-B. I see in the wiring diagram a Black
> and White wire to the coil. What is the function of the BW wire to the coil?
> Is it a anti theft function? Also if the BW wire is always connected to ground
> how does the coil get the off on signal from the distrubutor?
>
> I know I'll feel like an idiot once I know the answer.
>
> Wes Keyes
> York, Maine
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-- 
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Bob Spidell           San Jose, CA            bspidell at comcast.net

"Not everything that can be counted counts, and not everything 
that counts can be counted." -- Albert Einstein
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