Input is 9 Volts at about 55 ma average, up to 200 ma peak at a rate of 50+kHz. Terminal 1 is positive Terminal 2 is negative, .25\" male stab connector.

Maximum input is 10.8 Volts, Minimum is around 4 Volts at a considerably lower spark rate

Output is 2 coils, a-b and c-d, .110\" male stab connector. Across each output I get about a 1/2 \" arc, 6 arcs per second.

For 4 outputs use a,b,c,&d to ground via spark plug or other gap.

For 3 outputs ground the unused output.

For 2 outputs use a-b and c-d for grounded or ungrounded outputs.

For 1 output as shown in pic jumper b-c, use a-d

The pic shows about a 1 1/4\" spark with coils in series.

Not a continuous arc, about 6 per second with 9 volts input. The rate drops with lower input voltage, at 4 Volts it\'s about 1 spark every three seconds.

A weak battery will drop several volts under load resulting in a low spark rate.

The arc remains constant with changes in voltage, only the rate changes.

I ran two of these continuously for over 12 hours with 9.4 Volts input without a problem.

Size is 3 5/16\" L x 1\" W x 1 5/16 H without mounting ears. Add 3/16 to L & W for the ears

I\'ll include 4 .110\" and 2 .25 \"female stab connectors.

This is the last of them.