> The relay of course needs to be a 6V coil.
> A small one with a contact rating of 10 Amps would be adequate.
>
> No extra wires need to be run; use the existing Blk wire
> in the loom which comes out in the engine bay to operate the relay.
>
> An automotive-style circuit breaker could be inserted in the battery lead.


Relay received and installed - thank you Jim.

Problem rectified, starts on the first spark, every time.

Stops on request too ;-)

While I accept that this sort of fix might be viewed as a bandaid that
masks the symptom rather than addresses the cause, I think this is a
particular problem of an electronic ignition module in a 6V system
which wasn't covered in the original design. And its nothing that
can't be removed without a trace and reverted to bone stock at any
point in the future if desired.