This is an interesting gauge. There are engine probes that come with the gauge that attach to the engine and run inside the firewall. The gauge itself comes with a short wiring harness that is about 20” long. What I needed to make was a connection that will join the two together. I think what I made will work well, but time will tell if it’s too long, too short, or just right. I can’t modify the probe wires, so any changes will need to happen with the center harness. I have more wire and connector on the way.
The cylinder #1 and #2 probes are going to be shorter as they come through the firewall since they are farther away, so I made the harness longer for them.
