Lets look at it this way. Supose no one had invented something that would make a light blind go on and off yet, so someone rigged up this so that the spark from the plug lit up the light on a regular basis. Possibly off something like a distributor.
Logical?
Jack Sim


Author, 1st & 2nd editions of Gas Pump ID book, 3rd edition is now available at www.gaspumpbible.com
Air Meter ID book also available