a/c low pressure switch & plug replacement

glowstang93

20+ Year Stangneter :roc</strong><span class=
Feb 9, 2003
853
8
39
Illinois
My a/c compressor was not turning due to a bad a/c low pressure switch. The switch needed replaced but so did the plug, due to the locking tabs breaking off. The switch is easily unscrewed from the accumulator and the new one screwed back on with the supplied new o-ring. The new plug I was able to find from Napa, Item # ECHEC58. The plug only has 2 wires, but there are actually 3 wires going into the plug with 2 terminals that connect to the switch. No problem, just joined the 2 wires before connecting to the plug. I soldered the connections, heat shrink tape, and then wrapped in cloth friction tape (electrical tape). I took some pictures to go with the project. Hopefully this will help someone in the future.

The parts
View attachment 381784

Switch removed from the accumulator with the original plug still intact.
aclowpressureswitch002.webp


Original plug, so as to remember which side of the plug has the two wires.
aclowpressureswitch003.webp


Wires from original plug cut and separated to which side of the plug they go.
aclowpressureswitch005.webp


The 2 wires and the one side of the plug wire connected.
aclowpressureswitch006.webp


One wire done, just have to solder and heat shrink tape this one.
aclowpressureswitch007.webp


Finished project picture.
aclowpressureswitch008.webp


The switch is now working properly and the compressor is kicking on allowing for cold air to come from the vents. The a/c is working now, untill the next problem, you know how it is :rolleyes: