My original Dynon EGT probes failed and I bought a replacement set from Lockwood Aviation, a great Rotax dealer. The new probes are a bit different. First you need to open up the exhaust pipe holes slightly. They are 4 feet long, so you need to do some rerouting to eat up the length, and the wires terminate with round pins that you need to add spade terminals to, in order to plug in to the harness. Now the problem: My harness has a red lead and a yellow lead for the probes, but the new EGT probes have a black lead and a white lead. Which one goes where?? Hope someone has been there and done that......Tom