Looking into to the connector what is:
   ground, supply, signal gnd and signal?

   Paul Lamar


Paul,

The EC-2 manual shows which is ground, +12v, etc.

Mark

Bingo!

OK I have the EC2 manual. From that it looks like I have
the DS580 and not the DS581 shown on page 23.
Part number 12558948.

It has 4 pins. Starting on the left side A through D.
picture on page 22.

Thanks Mark,

That works. I got it to fire every 2 seconds or 30 RPM with a dwell
time of 1 second. Also at a voltage of only 6 volts. I am impressed.

It does not fire at 100 ms. I took a movie so you can see
that shortly.

Paul Lamar