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The plan is to go with a wasted spark setup (coilpack) which will be driven by the crank sensor. Here is a crank trigger wheel variable generator designed by GRMracer and converted into php by me:
http://www.starshadow.com/~koabi/carstuff/cranktriggers.php
I need to figure out what the 4 pins are for on the connector. Disclaimer, the info below is all based on assumption...
- 4 pins
- 1 pin for a pair of cylinders
- 1 pin for the other pair of cylinders
- 1 pin for power supply
- 1 pin for ground
- What about rpm signal for tach? My guess is that there is no ground - power goes through sparkplugs. So perhaps the 4th wire is tach
- New Theory:
- Coilpack is triggered on +5v instead of switched ground
- to be determined...
- also possible
- 1 pin for power supply
- 1 pin for ground
- 1 pin to trigger spark
- 1 pin as HV (secondary side) return (easy to test: appr 10..20kOhm with the sparkplug connection, maybe only in one direction)