Need help identifying AC system parts

[BowtieS10]

I have a 95 Ext-Cab S-10 2.2L 4 cylinder engine.
Need help identifying the 2 parts on the back of the AC compressor.
Both parts has 2 wires going in to each part. One part has a white and a light green wires going to it, and one part has a white and a dark green wires going to it.
Hope that is clear enough for you to understand.

[movin2stereo]

Originally Posted by BowtieS10

I have a 95 Ext-Cab S-10 2.2L 4 cylinder engine.
Need help identifying the 2 parts on the back of the AC compressor.
Both parts has 2 wires going in to each part. One part has a white and a light green wires going to it, and one part has a white and a dark green wires going to it.
Hope that is clear enough for you to understand.

Pic would help.

[RahX]

the one with the light green wire is the low pressure switch and the other is the high pressure switch. theyre wired in series so if one opens the compressor stops turning.