Operation CHARM: Car repair manuals for everyone.

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Circuit A142 splices to supply voltage to the fuel injectors and ignition coil.

Circuit K4 splices to supply ground for the signals from the following:
- Camshaft position sensor
- Crankshaft position sensor
- [1][2]Fuel level sensor
- Intake air temperature sensor
- Throttle position sensor
- Manifold absolute pressure sensor
- Engine coolant temperature sensor
- Speed control switches
- Transmission governor pressure sensor
- Transmission temperature sensor
- Vehicle speed sensor