Nothings melted, at least not yet
The dyno room is a mess while I get this engine ready to run, and that contributes to the clutter in the room. I think what you are seeing is some wires and cables that come up from the bottom of the dyno chassis to the back shelf, supplying an electronics box under the shelf and also the ignition or EFI system that sits on the shelf. For example, a couple 10 gauge power wires, a couple 10 gauge ground wires, a USB cable, etc. go up there. They are right next to the collector in the photo. There is a high temperature wrap around these cables that keeps them from getting burned. Most of the time the collector is actually further in and the cables don't touch it, but in this case the collector is farther outboard and the wrap can contact the collector. During the dyno session I'll pull it away with some wire and tie wraps to keep it from making contact with the collector, but for now it's just hanging there against it. Just a work in progress at this point...