What is this piece of my harness??

left- Bosch MAP sensor- found on LS2, LS3, and some other applications 2006-up
right- Delphi MAP Sensor- used from 1999-2005 on trucks and cars.

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Injector Connectors
left- ev1 (car ls)
middle- delphi truck

right-ev6 (newer truck)

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left- Throttle position sensor (TPS) used in cable driven throttle
middle- Idle Air Control (IAC) measures air flow at idle
right- Engine Control Temperature (ECT) measure engine temperatures

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MAF connectors
left- 3 wire MAF
middle- 5 wire MAF (2000-05)
right- 5wire MAF (2006-up)

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Coil pack
used in all ls based harnesses

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Transmission connector: 
4L80e or 4L60e

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Injectors
left- delphi truck
middle- ev1
right- ev6

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Top left- oil pressure sender
top right- rear camshaft sensor
bottom left- 2006-up knock sensor
bottom middle- engine control temperature
bottom right- Input speed sensor or vehicle speed sensor

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MAF
left- 5 wire
right- 3 wire

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97-05 Crankshaft sensor

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