My truck is acting a little funny. I have been running a edge ez or at leart i believe it is its rebadged ez. Truck will faulter and surge some times then when ez is unplugged or recently plugged back in will work fine.

I was looking at the plug the information plug and i noticed it only has 2 wires going into a 3 wire plug is this the issue do i have a broken wire?

Other ideas greatly appriciated.
ROb