I checked the back as well, they were all plugged in.. Hmm. So the one that was in the front unplugged, I pulled it out and kept connecting and disconnecting it - I seen a few wires from the plug so its probably bad. Didn't have the elect. spary. I used my compressor and sprayed both ends with some air - Didnt start it to see if it was fixed - tired of messin with it.